Orthopedics

Bone & Musculoskeletal
Trauma

WestNet Medical • Module 04 • Fractures, Bone Health & Human Variation

WestNet Unified Health Platform • WestNet Catalog 731985456598 • ISBN 978-0-XXXXX-XXX-X (Pending)
CE Accreditation Path: ANCC • ACCME • CARNA
Last updated: June 2026

Core Learning Objective

Learners will assess and describe musculoskeletal injury with rigor — open vs. closed, displacement, Salter-Harris in children — apply the Ottawa Ankle and Knee Rules to image wisely, perform reliable neurovascular checks, recognize compartment syndrome early, splint correctly, and treat the skeleton as living, diet-and-movement-responsive tissue rather than a fixed structure to be managed only with pharmacology.

Published By

WestNet Medical Publications
A division of WestNet North America Inc.
medical.westnet.ca

Co-Published With

WestNet Humanitarian Services (WHS)
UN Supplier • Registered NGO
www.westnet.ngo

WestNet Catalog (UPC-A): 7 31985 45659 8
ISBN 978-0-XXXXX-XXX-X (Pending) • First Edition

7 31985 45659 8

WestNet Medical Publications

Continuing Education Information

Field	Detail
Module	04 of 12 — Orthopedics
Contact Hours	2.5 (Pending ANCC / ACCME / CARNA approval)
Target Audience	RNs, LPNs, Nurse Practitioners, Paramedics, ER & Ortho Technicians, Athletic Therapists, Physiotherapists, Physician Assistants, Licensed Clinicians
Publication	WestNet Medical Publications • Catalog 731985456598 • ISBN Pending
Disclosure	Educational content. Does not replace facility policy, imaging protocols, physician orders, or local scope-of-practice regulations.

Describe a fracture precisely: open vs. closed, location, pattern, displacement, angulation, and shortening
Apply the Salter-Harris classification to growth-plate injuries in skeletally immature patients
Use the Ottawa Ankle and Knee Rules to decide when imaging is — and is not — indicated
Perform a structured neurovascular assessment and recognize the red flags of compartment syndrome
Apply splinting principles that immobilize the joint above and below without compromising perfusion
Identify fragility fractures and the upstream, modifiable drivers of bone fragility
Counsel on metabolic bone health: vitamin D, calcium, protein, and weight-bearing activity
Describe congenital limb variation respectfully — documenting variation, not pathology

Program Preface

§ 01

This module covers the orthopedic injuries clinicians actually meet — the rolled ankle, the wrist that landed wrong, the elderly hip, the child off the monkey bars — and the assessment skills that decide whether they heal well or poorly. It is rigorous on the mechanics: how to read a fracture, when to image, how to protect a limb, when minutes matter.

But it also asks a quieter question the busy department often skips: why did this bone break? A wrist fracture from standing height in a sixty-year-old is not just a wrist fracture — it is a window into a skeleton that has been losing ground for years. WestNet HealthOS was built to keep that window open, so the fracture clinic does not simply cast the bone and miss the person attached to it.

WestNet Position

The skeleton is not inert scaffolding. It is metabolically active tissue that remodels continuously in response to load, nutrition, and hormones. Much of the fragility we treat downstream with medication was shaped upstream by years of too little vitamin D, too little protein, and too little weight-bearing movement. Fix the break — and look upstream.

Bone Is Living Tissue

§ 02

It is easy to picture the skeleton as dry, finished, structural — the part of us that outlasts everything else. Clinically, that picture is misleading. Bone is among the most dynamic tissues in the body: a collagen scaffold mineralized with calcium and phosphate, laced with blood vessels and nerves, and rebuilt continuously by two opposing crews.

Crew I

Osteoclasts

Resorb old or micro-damaged bone, releasing minerals back into circulation. Overactive resorption — from estrogen loss, inflammation, or disuse — thins the skeleton.

Crew II

Osteoblasts

Lay down new bone matrix and mineralize it. They respond directly to mechanical load — which is why weight-bearing movement is, quite literally, a signal to build.

Signal

Wolff’s Law

Bone adapts to the loads placed on it. Stress it appropriately and it strengthens; unload it — bed rest, casting, weightlessness — and it demineralizes within weeks.

Supply

The Raw Materials

Remodeling needs inputs: vitamin D and calcium to mineralize, protein for the collagen scaffold, and adequate energy. Starve the inputs and the crews cannot keep up.

Why This Matters at the Bedside

Because bone is alive and responsive, fragility is partly a modifiable state, not only a fixed diagnosis. The same biology that lets a fracture knit back together is the biology you can support — or neglect — in every patient, long before and long after the injury.

Describing a Fracture Precisely

§ 03

A precise description communicates more than a label. “Distal radius fracture” tells the next clinician very little; “closed, dorsally angulated, dorsally displaced extra-articular distal radius fracture with mild shortening” tells them almost everything they need to plan. Describe every fracture along these axes.

Axis 01

Open or Closed

Is the skin breached at the fracture site? An open (compound) fracture is a surgical emergency — contamination, infection risk, antibiotics, and tetanus status all change. Look for any wound communicating with bone.

Axis 02

Location

Which bone, and where: proximal, mid-shaft (diaphyseal), or distal; intra-articular (into the joint) or extra-articular. Joint involvement raises the stakes for long-term function.

Axis 03

Pattern

Transverse, oblique, spiral, comminuted (>2 fragments), greenstick, or avulsion. Pattern hints at mechanism: spiral suggests a twisting force; comminuted suggests high energy.

Axis 04

Displacement

Have the fragments moved apart? Describe the position of the distal fragment relative to the proximal. Non-displaced fractures often manage conservatively; displaced ones may need reduction.

Axis 05

Angulation

The angle between fragments, named by the direction the apex points (e.g., dorsal, volar, varus, valgus). Angulation beyond acceptable limits demands correction to preserve alignment and function.

Axis 06

Shortening / Rotation

Overriding fragments shorten the bone; rotational deformity is easily missed on a single view and poorly tolerated. Always confirm rotation clinically, not just radiographically.

Documentation Standard

Describe what you see in structured, neutral language — the same discipline this series applies to every chart. A good fracture description is reproducible: another clinician reading it should be able to picture the injury without the film in front of them.

Fracture Patterns by Region

§ 04

The six descriptive axes of § 03 apply everywhere, but each region carries its own characteristic injuries, its own “don’t-miss” traps, and its own mechanism signatures. A clinician who recognizes the common patterns examines with intent rather than scanning blindly. The patterns below are recognition aids, not a substitute for imaging or specialist opinion — and management of any specific fracture must be confirmed against current local protocols.

Upper Limb

Distal Radius

The commonest adult fracture. A fall on the outstretched hand (FOOSH) classically produces a dorsally angulated, dorsally displaced pattern. In an older adult from standing height this is a fragility fracture — cast it and look upstream (§ 16). Always check the median nerve and the scaphoid.

Upper Limb

Scaphoid

The classic missed injury. FOOSH with tenderness in the anatomical snuffbox and a normal first film is a scaphoid fracture until proven otherwise. Its retrograde blood supply risks avascular necrosis and non-union, so immobilize and re-image or advance imaging rather than clearing it.

Upper Limb

Proximal Humerus & Clavicle

Proximal humerus fractures cluster in older adults after a fall; check axillary nerve sensation over the deltoid. Mid-shaft clavicle fractures are common in the young from a fall or contact — assess the skin (tenting) and the neurovascular bundle beneath.

Lower Limb

Ankle & Malleoli

Rotational forces fracture one or both malleoli; stability hinges on how many of the “rings” (medial, lateral, posterior, syndesmosis) are disrupted. Apply the Ottawa Ankle Rules (§ 07) to decide on imaging, and assess the joint for instability.

Lower Limb

Hip / Proximal Femur

The sentinel fragility fracture of the older adult. A shortened, externally rotated leg after a low fall is the classic picture; pain may be referred to the knee. High morbidity and mortality — expedite analgesia, imaging, and surgical referral, and never miss the bone-health story behind it.

Lower Limb

Tibial Shaft & Plateau

The tibia’s subcutaneous border makes shaft fractures a frequent open injury and a leading cause of compartment syndrome (§ 10). Tibial plateau fractures involve the joint surface and follow axial loading with a valgus/varus force. Treat raised suspicion of compartment syndrome as an emergency.

Don’t-Miss Patterns

Snuffbox tenderness after a FOOSH — presume scaphoid even with a normal film; immobilize and re-evaluate.
Hip pain referred to the knee in an older adult after a fall — image the hip, not just the knee.
Single forearm-bone fracture — look for an associated dislocation (the forearm is a ring; one break often means a second injury). Image the joint above and below.
Calcaneus fracture from a fall onto the heels — check the other heel and the spine; axial loading can injure both.

Region	Typical Mechanism	High-Yield Check
Distal radius	FOOSH	Median nerve; rule out scaphoid; in older adults, bone-health loop
Scaphoid	FOOSH	Snuffbox tenderness; risk of avascular necrosis/non-union
Proximal humerus	Fall onto shoulder/arm	Axillary nerve (deltoid sensation)
Ankle malleoli	Rotational / inversion	Ottawa Ankle Rules; joint stability
Proximal femur (hip)	Low-energy fall	Shortened/externally rotated leg; expedite; fragility loop
Tibial shaft	Direct or high-energy	Open wound; compartment syndrome

Use With Local Protocols

This is a recognition map for the bedside, not a treatment algorithm. Acceptable angulation, reduction indications, and operative thresholds differ by site and patient — verify against your current local protocols and scope of practice.

Dislocations & Reduction Principles

§ 05

A dislocation is complete loss of contact between the articular surfaces of a joint; a subluxation is partial. Dislocations matter not only because they are painful and deforming, but because the displaced bone can stretch, kink, or trap the nerves and vessels that cross the joint — which is why a neurovascular check is mandatory before and after any reduction attempt.

Principle 1

Document Neurovascular Status First

Pulses, sensation, and motor function in the relevant nerve distribution, recorded before any manipulation. A deficit that appears after reduction is meaningless without a baseline.

Principle 2

Reduce Promptly, Gently

The longer a joint stays dislocated, the harder reduction becomes and the greater the risk to cartilage and the blood supply. Reduction uses sustained, gentle traction — not force — and adequate analgesia/sedation per local protocol.

Principle 3

Re-check & Immobilize

Repeat the neurovascular exam immediately after reduction, confirm relocation (clinically and, where indicated, radiographically), then immobilize in a safe position and arrange follow-up.

Principle 4

Know What You Cannot Reduce

Open dislocations, fracture-dislocations, suspected vascular injury, and joints outside your training are for the specialist. Recognizing the limit of safe field/bedside reduction is itself a skill.

Joint	Common Direction	Structure Especially At Risk
Shoulder (glenohumeral)	Anterior (most common)	Axillary nerve — test deltoid sensation & abduction
Elbow	Posterior	Brachial artery; median/ulnar nerves
Finger (PIP/DIP)	Dorsal	Skin/volar plate; confirm no rotational deformity
Patella	Lateral	Usually reduces with knee extension; check for osteochondral injury
Hip (native or prosthetic)	Posterior	Sciatic nerve; emergency — risk to femoral-head blood supply
Ankle	Variable	Skin & neurovascular bundle — reduce urgently if skin/perfusion threatened

Emergencies Among Dislocations

A hip dislocation threatens the femoral-head blood supply and must be reduced urgently to limit avascular necrosis. A knee dislocation (tibiofemoral, not a kneecap) carries a high rate of popliteal artery injury — assess perfusion meticulously and escalate even if pulses seem present. Any dislocation with a neurovascular deficit or threatened skin is time-critical.

Scope & Safety

This module teaches the principles of reduction, not specific manoeuvres or sedation regimens — those are skill-, drug-, and protocol-dependent. No technique should be attempted outside your training and scope, and no medication or dose is specified here. Confirm every reduction approach, analgesia plan, and post-reduction imaging requirement against your current local protocols.

Fractures in Children: Salter-Harris

§ 06

Children are not small adults. Their bones are more elastic (hence greenstick and buckle/torus fractures), and they have a structure adults lack: the physis, or growth plate — a band of cartilage near each bone end where lengthening occurs. The physis is also the mechanically weakest part of a child’s bone, so it is a frequent site of injury. Damage it, and you risk growth arrest or deformity. The Salter-Harris system classifies these injuries.

Clinical Caution

A child with point tenderness over a growth plate may have a Salter-Harris I fracture with a normal X-ray — the cartilage injury is radiolucent. Treat the clinical picture: if the physis is tender, immobilize and re-evaluate rather than clearing the child because “the film looks fine.”

Observe the Child, Not Just the Film

Persistent localized tenderness, refusal to bear weight, or asymmetry deserve respect even when imaging is unrevealing. The growing skeleton forgives little; err toward protection and follow-up.

The Ottawa Ankle & Knee Rules

§ 07

Not every twisted ankle needs a radiograph. The Ottawa Ankle Rules — validated across large multicentre studies with near-100% sensitivity for clinically significant fractures^[1,2] — let clinicians safely rule out fracture without imaging, reducing unnecessary X-rays by roughly a third while almost never missing a break. The companion Ottawa Knee Rule does the same for knee injuries.

Ottawa Ankle Rules — In Brief

An ankle X-ray series is required only if there is pain in the malleolar zone and any of: bone tenderness at the posterior edge/tip of the lateral malleolus, bone tenderness at the posterior edge/tip of the medial malleolus, or inability to bear weight (4 steps) both immediately and in the department. For the midfoot, image if there is midfoot pain plus tenderness at the navicular or the base of the 5th metatarsal, or inability to bear weight.

Select the joint, then check every finding present. The recommendation updates live. This is a teaching aid that follows the published Ottawa criteria — it supports, never replaces, clinical judgement, and the rules apply to adults with isolated, recent injury (not to children under ~5, intoxicated or uncooperative patients, multiple painful distracting injuries, or those with diminished sensation).

Ankle & Midfoot — check all findings present

✓

No imaging indicated

By the Ottawa criteria, X-ray is not required. Treat as a soft-tissue injury, give clear return precautions, and re-examine if pain or weight-bearing fails to improve.

How to Use It

The Ottawa Rules are a rule-out tool: their power is high sensitivity, so a negative result is reassuring. Any positive finding means image. The rules never override a worrying clinical picture — if something else concerns you, image regardless.

Sprains & Strains: Grading the Soft Tissue

§ 08

Most musculoskeletal injuries never break a bone — they injure the soft tissue around it. Precise language matters here too. A sprain is an injury to a ligament (bone-to-bone); a strain is an injury to a muscle or tendon (muscle-to-bone). Both are graded by severity, and the grade drives the rehabilitation timeline and the return-to-activity conversation.

Grade I

Mild — Microscopic

Stretching with microscopic tearing of fibres. Mild pain and swelling, minimal loss of function, joint remains stable. Usually a short course of protected activity and graded return.

Function: Stable joint; can usually bear weight with discomfort.

Grade II

Moderate — Partial Tear

Partial tearing with more pain, swelling, bruising, and some loss of function. There may be mild-to-moderate joint laxity. Needs protection, a structured rehab plan, and reassessment.

Function: Some instability/laxity; weight-bearing painful and limited.

Grade III

Severe — Complete Rupture

Complete tear with marked swelling, often striking bruising, and significant instability or loss of power. May need specialist assessment; some grade III injuries are managed operatively.

Function: Frank instability or inability to use the part; refer.

Sprain vs. Strain — Keep Them Straight

Ligament → sprain (think the inverted ankle stretching the lateral ligaments). Muscle/tendon → strain (think the sprinter’s pulled hamstring). The mechanism usually tells you which: a wrench or twist sprains a joint; a sudden forceful contraction or overstretch strains a muscle.

When a “Sprain” Is Not a Sprain

Significant instability, a felt or heard “pop” with rapid swelling, inability to bear weight, or point bony tenderness can signal a complete rupture, an avulsion fracture, or a fracture hiding under the soft-tissue injury. Apply the Ottawa Rules (§ 07) where relevant, and do not over-reassure a grossly unstable joint as “just a sprain.”

Why Grading Guides Care

The grade sets expectations: a grade I sprain and a grade III rupture are different injuries with different timelines, even at the same joint. Naming the grade honestly — and revisiting it as swelling settles and the exam becomes more reliable — keeps the rehabilitation plan (§ 21) realistic and the patient’s expectations grounded.

Low Back Pain: Sorting the Red Flags

§ 09

Low back pain is one of the most common presentations in all of medicine, and the great majority is benign, mechanical, and self-limiting. The clinical skill is not in treating every backache aggressively — it is in screening for the rare, serious cause hiding among the many ordinary ones. A small set of “red flags” does most of that work.

Red Flags — The Serious Few

Cauda equina signs — new bladder/bowel dysfunction (especially retention), saddle anaesthesia, or bilateral leg weakness/numbness. A surgical emergency.
Possible infection — fever, recent infection or IV drug use, immunosuppression, with spinal pain.
Possible malignancy — history of cancer, unexplained weight loss, pain that is worse at night or unrelieved by rest, age > 50 with new pain.
Significant trauma — or minor trauma in someone with osteoporosis or on long-term steroids (possible fracture).
Progressive neurological deficit — worsening weakness, numbness, or reflex changes.

The Reassuring Majority

Most acute low back pain is mechanical: it varies with movement and position, lacks red flags, and improves over days to weeks. For this group the evidence favours staying active, avoiding prolonged bed rest, simple self-care, and clear safety-netting — not reflexive imaging, which rarely changes management and can mislead.

Check every red-flag feature present. The recommendation updates live. This teaching aid follows widely used red-flag screening principles — it supports, never replaces, full assessment and your current local protocols. The cauda-equina features are weighted as an emergency on their own.

Low back pain — check all red flags present

✓

No red flags selected

No red flags identified. Manage as mechanical low back pain: encourage activity, give simple self-care advice and clear safety-netting, and arrange review if pain fails to settle or any red flag appears. Imaging is rarely needed early.

Safety-Netting Is the Treatment

Because serious causes are rare but time-critical, the most important thing you can give a patient with benign back pain is a clear list of warning signs — especially new bladder/bowel changes or saddle numbness — and explicit instructions to return urgently if any appear. The checker above is an aid to that conversation, not a substitute for it.

Neurovascular Checks & Compartment Syndrome

§ 10

The fracture you can see is rarely the thing that maims. The limb-threatening problems are vascular and neurological — and they unfold over hours. Every injured or splinted limb needs a documented neurovascular assessment at baseline and on a schedule. Compare with the uninjured side.

Check 1

Perfusion

Distal pulses, capillary refill (<2 s), colour, and temperature. A cool, pale, pulseless distal limb is an emergency — arterial compromise can lose the limb within hours.

Check 2

Sensation

Light touch and two-point discrimination in each nerve distribution. New numbness or paraesthesia is an early warning, not a footnote.

Check 3

Motor

Active movement against resistance in the relevant muscle groups. Document what the patient can and cannot do, and whether it changes.

Check 4

Pain Out of Proportion

Pain that is escalating, unrelenting, and far beyond what the injury should cause — especially on passive stretch — is the cardinal early sign of compartment syndrome.

Case Vignette

A young adult is splinted for a closed mid-shaft tibial fracture. Over the next few hours the pain escalates relentlessly and is no longer controlled by repeated opioid doses. On exam, passive stretch of the toes provokes severe pain, the calf is tense and swollen, and the patient now reports pins-and-needles in the foot. Distal pulses are still palpable.

Resolution: This is acute compartment syndrome — a clinical diagnosis and a surgical emergency. Do not wait for pulselessness; loss of pulses is a late sign, and by then the muscle may already be infarcting. Remove the constrictive splint and any circumferential dressing, keep the limb at heart level, and obtain urgent orthopedic review for emergent fasciotomy. Palpable pulses do not rule it out.

Red Flags — Escalate Now

Pain out of proportion to the injury, plus severe pain on passive stretch of the compartment.
A compartment that feels tense, firm, or “wood-like” on palpation.
Paraesthesia or progressive sensory loss distal to the injury.
Any open fracture — skin breached at the fracture site.
Neurovascular deficit distal to the injury (cool, pale, pulseless, or weak/numb).

Any one of these means possible compartment syndrome or vascular injury — escalate to orthopedics now; do not wait for the picture to complete.

Compartment Syndrome — The 5 (or 6) P’s

Pain out of proportion and on passive stretch (earliest) • Paraesthesia • Pallor • Paralysis • Pulselessness • Poikilothermia. By the time pulses vanish, the window may be closing. Do not wait for all five. Pain out of proportion plus pain on passive stretch is enough to escalate — this is a surgical emergency (fasciotomy). Remove circumferential casts/dressings, keep the limb at heart level (not elevated), and call surgery now.

Documentation

Chart neurovascular status in concrete, comparative terms (“dorsalis pedis 2+ and symmetric; cap refill <2 s; sensation intact to light touch; wiggles toes freely”). Trends matter more than any single reading — a worsening exam is the alarm.

Clinical Pearls

Document neurovascular status before and after every splint, reduction, or cast change. Without a baseline, you cannot prove a limb is deteriorating — and a single normal check is worthless next to a documented trend.
Escalating pain out of proportion, plus pain on passive stretch, is compartment syndrome until proven otherwise. Do not wait for pulselessness — it is a late sign. This is a surgical emergency: remove circumferential dressings, keep the limb at heart level, and call surgery for fasciotomy now.
Every fragility fracture is a reason to screen and treat osteoporosis. A break from a standing-height fall is the single strongest predictor of the next — close the loop with a bone-health assessment, do not just cast and discharge.
Bone is living tissue, so prevention is active, not passive. Adequate vitamin D, sufficient dietary protein, and regular weight-bearing/resistance loading (Wolff’s Law) build and defend the skeleton — levers no prescription can replace.

At-a-Glance — Finding	What It Suggests	Action / Escalation
Skin breached at the fracture site (any wound over bone)	Open (compound) fracture — contamination & infection risk	Surgical emergency. Cover, document neurovascular status, escalate to orthopedics; confirm tetanus status and antibiotic/wound protocol locally.
Pain out of proportion, worse on passive stretch; tense compartment	Acute compartment syndrome (earliest signs)	Surgical emergency — do not wait for pulselessness. Remove circumferential dressings, limb at heart level, urgent orthopedic review for fasciotomy.
Cool, pale, pulseless, or progressively weak/numb distal limb	Arterial or neurovascular compromise	Emergency. Recheck after any reduction/splint; escalate immediately — a limb can be lost within hours.
Ankle pain in malleolar zone and bony tenderness (post. edge/tip of either malleolus) or can’t bear weight 4 steps	Ottawa Ankle Rule positive	Image (ankle series). A negative rule is reassuring; image anyway if clinical concern persists.
Midfoot pain and tenderness at navicular or base of 5th metatarsal, or can’t bear weight 4 steps	Ottawa Midfoot Rule positive	Image (foot series). Same rule-out logic as the ankle.
Knee injury with age ≥55, isolated patellar tenderness, fibular-head tenderness, can’t flex to 90°, or can’t bear weight 4 steps	Ottawa Knee Rule positive	Image (knee series).
Point tenderness over a child’s growth plate with a normal film	Possible radiolucent Salter-Harris I	Treat the clinical picture: immobilize, re-evaluate; do not clear on imaging alone.
Low-energy fracture (fall from standing height) in an older adult	Fragility fracture — strongest predictor of the next	Cast/splint and close the loop: bone-health assessment, falls review, follow-up (see § 16–17).

Use With Local Protocols

This table distils principles and red flags for rapid bedside recall — it deliberately names no drugs or doses. Specific imaging criteria, antibiotic choices, and escalation pathways vary by site; verify against your current local protocols and scope of practice before acting.

Splinting Principles

§ 11

A good splint protects, reduces pain, and prevents further injury — without becoming a tourniquet. These principles hold across nearly every device, from a vacuum splint in the field to a plaster slab in the department.

Immobilize the joint above and the joint below the fracture
Assess and document neurovascular status before and after applying
Pad bony prominences; leave fingertips/toes visible to monitor perfusion
Splint in position of function unless reducing an obvious deformity
Allow for swelling — non-circumferential in the acute phase
Give clear elevation, ice, and return-precaution instructions

Don’t

Apply a tight, fully circumferential cast over a fresh, swelling injury
Cover the digits so you can’t check colour, warmth, and movement
Forcibly straighten a grossly deformed limb without indication/training
Ignore escalating pain under a splint — that is a red flag, not normal
Leave wrinkles or pressure points that can ulcerate the skin
Send the patient home without written warning signs

The Cardinal Rule

A splint that causes increasing pain, numbness, or a cold, dusky limb is too tight or hiding a complication — loosen or remove it and reassess immediately. No splint is worth a limb. Teach every patient the warning signs before they leave.

Splinting & Casting Technique by Region

§ 12

§ 11 set out the universal principles — immobilize the joint above and below, allow for swelling, document neurovascular status, leave the digits visible. This section turns those principles into the device you actually reach for, region by region. The names below are the common conventions; the specific construct, materials, and duration are protocol- and skill-dependent and must be confirmed locally.

Injury Region	Common Immobilization	Key Technique Point
Wrist / distal radius (undisplaced or post-reduction)	Volar or sugar-tong slab	Sugar-tong controls forearm rotation; leave room for swelling, never circumferential when fresh
Scaphoid (suspected)	Thumb-spica	Immobilize the thumb; low threshold given the missed-fracture / non-union risk
Elbow / forearm	Long-arm posterior slab	Immobilize above and below; elbow typically near 90° unless contraindicated
Finger (stable)	Buddy taping or aluminium splint	Buddy-tape to the adjacent finger; check and correct rotation
Ankle / distal lower leg	Posterior slab ± stirrup	Adding a stirrup (U-slab) resists inversion/eversion; pad the malleoli
Knee (soft-tissue or undisplaced)	Knee immobilizer / long-leg slab	Maintain safe extension; preserve neurovascular monitoring distally

Choose an injury region to see a commonly used immobilization option and its key technique point. This is a teaching aid that reflects general convention — it does not replace hands-on training, supervision, or your current local protocols, and it names no specific durations.

Select an injury region

⚒

Choose a region above

Select an injury region to see a commonly used splint or cast and the single most important technique point for it.

Casting — Do

Use a non-circumferential slab (backslab) while an acute injury is still swelling
Pad bony prominences and the cast edges; mould evenly without point pressure
Re-check and document neurovascular status after the cast/slab is set
Give written cast-care and red-flag instructions before discharge

Casting — Don’t

Apply a tight, fully circumferential cast over a fresh, swelling injury
Trap heat or leave a wet cast against skin without monitoring
Dismiss a patient’s report of burning, increasing pain, or numbness under a cast
Cover the fingertips/toes so colour, warmth, and movement can’t be checked

Cast Complications — Teach Before You Discharge

A cast that becomes too tight as the limb swells can cause the same neurovascular compromise as a tight splint — up to and including compartment syndrome (§ 10). Every patient leaves knowing the warning signs: increasing pain not relieved by elevation, numbness or tingling, fingers/toes that turn pale, blue, cold, or won’t move, or a burning/pressure point under the cast. Any of these means return immediately; the cast may need to be split or removed.

Skill, Not Just Knowledge

Casting and splinting are procedural skills learned under supervision. This section maps the options to the injury; it is not a substitute for hands-on training, and it deliberately specifies no materials, layering counts, or immobilization durations — follow your current local protocols and scope of practice.

Acute Soft-Tissue Care: RICE and the Evidence

§ 13

For decades the reflex for a sprain or strain has been RICE — Rest, Ice, Compression, Elevation. It is simple, memorable, and harmless in moderation. But the evidence underpinning each letter is softer than the mnemonic’s confidence implies, and contemporary sports-medicine thinking has shifted from rest toward early, protected loading. This section is about holding a popular acronym up to the light — the same root-cause habit this series applies everywhere.

The Old Reflex

RICE, applied rigidly

“Rest” interpreted as prolonged immobility — which can stiffen joints and waste muscle
Ice assumed to speed healing, not just blunt pain in the first hours
One acronym applied identically to every soft-tissue injury, regardless of grade
The active-recovery phase left vague — patients told only what not to do

The Contemporary View

Protect & load, then progress

Brief protection, then early, graded, pain-guided movement to restore function
Ice/compression/elevation mainly for comfort and swelling control early on — not as the engine of healing
Loading is a stimulus to repair (tendons and ligaments adapt to load, much as bone does)
Newer frameworks (e.g., PEACE & LOVE) explicitly add the recovery phase: gradual return to activity, optimism, and avoiding unnecessary anti-inflammatory suppression of healing

What This Does — and Doesn’t — Mean

This is not a claim that ice or rest are “wrong.” Early relative rest, ice for comfort, compression, and elevation remain reasonable in the first hours of a painful injury. The shift is one of emphasis: away from prolonged inactivity and toward early, protected, pain-guided loading as swelling allows. Severe injuries (grade III, suspected fracture, instability) still need protection and assessment first — see § 08 and the rehabilitation principles in § 21.

The WestNet Reading

A mnemonic is a memory aid, not a level of evidence. The discipline is to ask why each step is recommended and what it actually achieves — comfort, swelling control, or genuine acceleration of repair — and to update practice as the evidence moves. Match intensity to the injury, restore movement early where safe, and verify against current local guidance.

Sports & Overuse Injuries

§ 14

Not every musculoskeletal injury arrives from a single dramatic event. Many build silently from repetitive load that outpaces the tissue’s ability to adapt — the runner’s shin, the thrower’s shoulder, the adolescent’s heel. Recognizing the overuse pattern changes the conversation from “what did you do?” to “how much, how fast, and how recovered?”

Acute

Macrotrauma

A single identifiable event exceeds tissue tolerance — the ankle sprain, the hamstring pull, the fall. Mechanism is obvious and the injury is usually graded as in § 08.

Chronic

Overuse / Microtrauma

Repeated sub-threshold load with inadequate recovery accumulates into injury: tendinopathy, stress reaction, apophysitis. The “mechanism” is a training pattern, not a moment.

Pattern

Tendinopathy

Load-related tendon pain (e.g., Achilles, patellar, rotator cuff) is now understood as a failed adaptation to load — managed largely with progressive, structured loading rather than rest alone.

Bone

Stress Reaction / Fracture

Bone that is loaded faster than it can remodel develops a stress reaction, then a stress fracture. Localized bony tenderness with an insidious onset in an active person deserves respect — this is Wolff’s Law in reverse.

Don’t-Miss: Stress Fracture & the Female/Male Athlete Triad

Insidious, localized, load-related bony pain — classically in the tibia, metatarsals, or femoral neck — can be a stress fracture, which may not appear on early plain films. A femoral-neck stress fracture is potentially serious and warrants prompt assessment. In athletes with stress fractures, recurrent injury, or menstrual disturbance, consider relative energy deficiency (the athlete triad: low energy availability, menstrual/hormonal disruption, low bone density) — a bone-health story (§ 16–17) hiding inside a sports injury.

Training Error Is the Usual Culprit

Most overuse injuries trace to a change the body wasn’t given time to absorb: a sudden jump in distance, intensity, or frequency; new footwear or surface; too little recovery. The root-cause move is to find the load error, correct it, and rebuild gradually — not simply to rest until pain stops and then resume the same volume that caused it.

Manage the Load, Not Just the Pain

Overuse injuries respond to modified load, not necessarily to complete rest — the tissue still needs a stimulus to adapt. Relative rest, technique and training review, and a graded return (§ 21) usually beat prolonged inactivity. Refer or image when pain is bony and localized, night pain is present, or a stress fracture is suspected. Confirm specific management against current local protocols.

The Hot, Swollen Joint & Aspiration Basics

§ 15

A single acutely hot, swollen, painful joint is a presentation that demands a specific reflex: rule out septic arthritis. A joint infection can destroy cartilage within days and can be life-threatening, so it sits at the top of the differential until excluded — even though the same picture is more often caused by crystal arthritis (gout, pseudogout), trauma (haemarthrosis), or a flare of inflammatory arthritis.

Septic Until Proven Otherwise

An acutely hot, swollen, painful joint — especially with fever, systemic illness, or inability to use the joint — is septic arthritis until excluded. This is an emergency: it warrants urgent assessment and, in most settings, joint aspiration for synovial fluid analysis before assuming a benign cause. Do not anchor on “it’s just gout” without considering infection.

Why

Diagnosis

Synovial fluid is the key test: cell count, Gram stain, culture, and crystal microscopy distinguish septic, crystal, and inflammatory causes in a way no blood test or scan reliably can.

Why

Relief

Draining a tense effusion or a haemarthrosis can substantially relieve pain and pressure — therapeutic as well as diagnostic.

Principle

Aseptic Technique

Arthrocentesis is a sterile procedure: introducing infection into a previously clean joint is exactly the harm you are trying to exclude. Strict asepsis is non-negotiable.

Principle

Know the Cautions

Overlying cellulitis, a prosthetic joint, and significant coagulopathy change the calculus — these are situations to involve the appropriate specialist rather than proceed unsupported.

Synovial Fluid Pattern	Suggests	Caveat
High cell count, neutrophil-predominant, positive Gram stain/culture	Septic arthritis	Treat as infection while awaiting culture; counts overlap — clinical picture rules
Crystals on polarized microscopy (urate or calcium pyrophosphate)	Gout / pseudogout	Crystals and infection can coexist — finding crystals does not exclude sepsis
Frank blood	Haemarthrosis (trauma, anticoagulation)	Consider intra-articular fracture; review anticoagulation
Mildly raised count, no crystals/organisms	Inflammatory or reactive	Correlate with the broader clinical picture

Scope & Safety

This section teaches why and when the swollen joint is aspirated and how synovial fluid is interpreted — not how to perform arthrocentesis, which is a supervised procedural skill with site-specific approaches. No drugs or doses are specified. Whether you aspirate, refer, or escalate depends on your training, scope, and current local protocols — when in doubt with a possibly septic joint, escalate.

Fragility Fractures & Osteoporosis

§ 16

A fragility fracture is a break from a force that would not normally break a healthy bone — classically a fall from standing height or less. The common sites are the hip, the spine (often silent vertebral compression fractures), and the distal radius. These are not bad luck. They are the visible end of a long process of bone loss, and the first fragility fracture is the single strongest predictor of the next.

We reach peak bone mass by about age 30; everything after is maintenance against gradual loss, which accelerates sharply at menopause as estrogen falls. The higher the peak built in youth — through nutrition and weight-bearing activity — and the slower the later loss, the further the skeleton stays from the fracture threshold.

A Both/And, Not Either/Or

Antiresorptive and anabolic medications have a real, evidence-based place after a fragility fracture and in high-risk patients — this module does not dispute that. The WestNet point is quieter: medication works best alongside, not instead of, the upstream levers. A pill that slows bone loss cannot replace the vitamin D, protein, and loading that the bone-building crews actually need. Treat the fracture and the soil it grew from.

Don’t Miss the Silent Ones

Vertebral compression fractures frequently cause no acute event — just gradual height loss, a stooped posture, or vague back pain. Ask about height loss; look at the kyphosis. A recognized vertebral fracture is a loud call to assess and address bone health.

A Common Assumption

The fracture is the whole story

“She broke her wrist — cast it and she’s done.” The break is treated as bad luck, not a signal.
Bone fragility is seen as a fixed, age-given fact — nothing much to be done but medicate.
Diet and activity are “lifestyle” footnotes, secondary to the prescription.
The next fracture is left to chance; no upstream loop is closed.

What the Evidence Shows

A fragility fracture is a signal, not just a bone

A low-energy fracture is the single strongest predictor of the next — it is a prompt to assess and treat bone health, not just to cast.^[3,7]
Bone is responsive tissue: vitamin D sufficiency, adequate protein, and weight-bearing/resistance loading measurably shift fracture trajectory.^[3,4]
Nutrition and activity are foundational levers that work alongside — not instead of — appropriate medication.
Closing the loop (falls review, bone-health workup, follow-up) is how the next fracture is prevented.

Treat the Person, Not the Label

None of this is a quarrel with pharmacology, and it is never a reproach to the patient — fragility is a history, not a failing. The diplomatic, evidence-aligned move is to fix the break, name the underlying bone-health picture plainly, and address its modifiable roots: vitamin D, protein, calcium (diet first), weight-bearing activity, and the falls that turn a fragile bone into a broken one. Older adults who fall are especially served by this both/and approach — see Module 11 — Elder Care & Delirium Management for falls assessment and prevention. Always pair counselling with formal fracture-risk assessment where indicated, and verify management against current local protocols.

Metabolic Bone Health: The Upstream Levers

§ 17

If bone is living, diet-and-movement-responsive tissue, then bone health is something a clinician can actually build — not just monitor as it declines. Four levers do most of the work, and none of them require a prescription.

Lever 01

Vitamin D

Without adequate vitamin D, the gut cannot absorb calcium efficiently — so even a calcium-rich diet underperforms. Deficiency is common, especially at northern latitudes and in those who cover up or stay indoors. Check levels in at-risk patients and supplement to sufficiency.

Lens: The cheapest fracture-prevention tool is often a sunlit walk and a vitamin D level that is actually adequate.

Lever 02

Calcium (Diet First)

Calcium is the mineral the matrix is built from. Favour dietary sources — dairy, fortified plant milks, leafy greens, tinned fish with bones — before reflexively reaching for high-dose supplements, which carry their own trade-offs.

Lever 03

Protein

Roughly half of bone volume is protein — the collagen scaffold the minerals attach to. Under-eating protein, common in frail older adults, starves the very framework. Adequate protein supports both bone and the muscle that protects it from falls.

Lever 04

Weight-Bearing & Resistance Activity

Load is the signal to build (Wolff’s Law). Walking, stair-climbing, and especially resistance training tell osteoblasts to lay down bone — and build the muscle and balance that prevent the fall in the first place. Disuse does the opposite.

Root-Cause Framing

A fall is the proximate cause of a hip fracture. The deeper causes — years of insufficient vitamin D, low protein intake, a sedentary decade that wasted both bone and muscle — are upstream and, crucially, modifiable. Observation-first orthopedics treats the break and then turns to the conditions that produced it. (See Module 03, Clinical Nutrition, and Module 10, Diabetes & Endocrine.)

At the Bedside: A Communication Script

How bone-health news lands depends on the words. The goal is to inform and empower without blaming — fragility is a history to work with, not a verdict. Keep the language plain, the agency with the patient, and the next step concrete.

Say This

“Your bone broke from a smaller force than we’d expect — that tells us your bone strength is worth looking into, and there’s a lot we can do about it.”
“Bone is living tissue. It responds to what we feed it and how we load it — so this is something we can actively work on together.”
“Let’s treat the break and also check a few things — vitamin D, your diet, your steadiness on your feet — so we can lower the chance of another.”
“What does a typical day’s eating and walking look like for you?” (Ask, then build the plan around the real answer.)

Not That

“Your bones are just old and brittle — there’s nothing to be done but a pill.” (Fatalistic and inaccurate.)
“You should have been drinking more milk / exercising years ago.” (Blames; closes the conversation.)
“It’s just osteoporosis, very common at your age.” (Dismisses a strong predictor of the next fracture.)
Reciting a diagnosis and a prescription without asking how the person actually eats, moves, or lives.

Why the Wording Matters

Naming the upstream picture as modifiable invites partnership; framing it as fixed decline invites resignation. This is counselling guidance, not a script for specific therapy — medication decisions, targets, and doses follow formal assessment and your current local protocols.

Osteoporosis Deep-Dive: Diagnosis & the Treatment Landscape

§ 18

§ 16 framed fragility as a signal and § 17 covered the upstream levers. This section goes deeper on the formal picture: how osteoporosis is defined, how fracture risk is assessed, and the broad categories of pharmacologic therapy — described at the level of mechanism, not prescription. Consistent with this series’ safety stance, no specific drugs, doses, or regimens are given; those decisions follow formal assessment and your current local protocols.

Define

What Osteoporosis Is

A skeletal disorder of low bone mass and deteriorated micro-architecture that raises fracture risk. It can be diagnosed by a sufficiently low bone-density measurement or, importantly, by the occurrence of a fragility fracture itself.

Measure

Bone Densitometry (DXA)

DXA reports a T-score (comparison to a young-adult reference). Conventionally, normal is roughly ≥ −1.0; “low bone mass” lies between; and a value at or below about −2.5 meets the densitometric threshold for osteoporosis. Thresholds and interpretation are guideline- and site-specific.

Estimate

Fracture-Risk Tools (FRAX)

Tools such as FRAX combine clinical risk factors (age, prior fracture, steroids, smoking, and more) — with or without bone density — to estimate the probability of fracture over time, helping target who benefits most from treatment.

Decide

Who to Treat

Decisions weave together fracture history, density, calculated risk, and the patient’s values. A prior fragility fracture is itself a powerful indication to assess and treat. The threshold and choice are individualized against current guidance.

Pharmacologic therapy falls into two broad mechanistic families. Tap a card to turn it over for the plain-language mechanism. These are categories for orientation, not a prescribing guide.

Family 01

Antiresorptive Agents

Slow the bone-removing crew.

Tap to flip ↻

Mechanism

Reduce the activity of osteoclasts, slowing bone resorption so that formation can keep pace and density is preserved or modestly gained. This family includes several widely used drug classes. Specific agents, routes, and durations are protocol-dependent and not listed here.

Family 02

Anabolic Agents

Stimulate the bone-building crew.

Tap to flip ↻

Mechanism

Actively stimulate osteoblasts to build new bone, rather than only slowing loss — generally reserved for higher-risk patients and used for a defined course, often followed by an antiresorptive to hold the gains. Specifics follow specialist guidance.

Underneath Both

The Foundation

What every drug is built on.

Tap to flip ↻

Why It Matters

Neither family works on an empty foundation. Adequate vitamin D, calcium, and protein plus weight-bearing/resistance loading (§ 17) are the substrate the medications act upon — and falls prevention is what stops a fragile bone from becoming a broken one. Both/and, not either/or.

Don’t Forget

Secondary Causes

Not all bone loss is “primary.”

Tap to flip ↻

Look Upstream

Some osteoporosis is driven by an identifiable cause — long-term steroids, thyroid or parathyroid disorders, low sex hormones, malabsorption, and others. Screening for and addressing a secondary cause can change management entirely. Investigate per local guidance.

Both/And, Restated

This deeper look does not retreat from § 16–17. Medication has a genuine, evidence-based role in the right patient — and it works best on a foundation of vitamin D, protein, calcium, loading, and falls prevention. The clinician’s job is to assess risk formally, treat the high-risk patient appropriately, and never let the prescription crowd out the upstream work.

Verify Against Current Guidance

T-score cut-points, risk-tool thresholds, treatment indications, drug choices, durations, and monitoring all vary by guideline body and are periodically revised. This section is an orientation to the landscape, not a treatment protocol — confirm every decision against current local protocols and specialist guidance.

Bone-Health Self-Assessment

§ 19

This teaching tool turns the upstream levers into a quick, modifiable-risk reckoner. Slide to reflect a patient’s current bone-health habits and risk picture — the lower the slider, the more upstream gaps to close. It is an educational aid for counselling, not a diagnostic instrument or a substitute for formal fracture-risk assessment (e.g., FRAX) or bone densitometry.

Interactive Clinical Partner

Bone-Health & Fragility-Risk Calibrator

Estimate the patient’s modifiable bone-health standing — vitamin D sufficiency, dietary calcium and protein, weight-bearing activity, and offsetting risk factors (prior fragility fracture, long-term steroids, smoking, heavy alcohol, low body weight). The guidance adjusts in real time. Always pair with formal assessment where indicated.

5/10

Mixed — room to build

0 · High risk5 · Mixed10 · Well-supported

Counselling Priorities

Lower standing → more upstream gaps to close before (or alongside) any pharmacologic therapy. Bone is responsive tissue: even modest, sustained changes in vitamin D, protein, and weight-bearing activity shift the trajectory.

The Growing Skeleton: Pediatric Detail

§ 20

§ 06 introduced the Salter-Harris system. This section deepens the pediatric picture, because children’s bones behave so differently that adult assumptions can actively mislead. The growing skeleton is more elastic, heals faster, can remodel away some deformity with time — and yet carries a unique vulnerability at the growth plate that, mishandled, produces lifelong deformity.

Pattern 01

Buckle (Torus) Fracture

A compression buckle of one cortex, classically at the distal radius, from a fall. Inherently stable and benign — it heals reliably with simple protection. The lesson is not to over-treat a stable childhood injury.

Pattern 02

Greenstick Fracture

The elastic bone bends and cracks on the tension side while the other cortex stays intact — like snapping a green twig. Angulation, not displacement, is the management question.

Pattern 03

Plastic (Bowing) Deformity

The bone bends without an obvious cortical break — unique to children. Easy to miss on a quick film; compare with the other side and respect a clinically deformed but “intact-looking” bone.

Pattern 04

Apophysitis

Traction injury at a growth centre where a tendon pulls (e.g., the heel or the tibial tubercle in active adolescents). A load/overuse problem of the growing skeleton (§ 14), not a true fracture — managed with load modification.

The Cartilage Is Radiolucent — Believe the Exam

Because the physis is cartilage, a Salter-Harris I injury can show a completely normal X-ray. A child with point tenderness directly over a growth plate is treated as having a growth-plate fracture regardless of the film: immobilize and re-evaluate, rather than clearing the child because “imaging is normal.” The growing skeleton forgives little — err toward protection.

Remodeling Is a Friend, Not a Free Pass

Children remodel residual angulation impressively, especially when young, near a growth plate, and in the plane of joint motion — which is why some deformity that would be unacceptable in an adult is accepted in a child. But rotational deformity remodels poorly at any age, and growth-plate injury can cause progressive deformity or limb-length difference. Acceptable angles are age- and site-specific: confirm against current local protocols, and arrange follow-up to watch the growth.

A Quiet Duty: Consider the Whole Picture

Most childhood fractures are ordinary accidents of an active life. Occasionally the pattern, the story, the developmental stage, or the delay in presentation does not fit — and recurrent low-energy fractures can also signal an underlying bone-fragility condition. Assess each child thoughtfully and follow your local safeguarding and clinical pathways. This is a matter of careful, non-judgemental observation, documented factually — the same “observe the human” discipline this series applies throughout.

Rehabilitation & Return to Mobility

§ 21

The cast comes off, the swelling settles — and the injury is only half-treated. A bone that has united is not a limb that works. Immobilization, however necessary, exacts a price: muscle wasting, joint stiffness, lost proprioception, and demineralized bone (Wolff’s Law again). Rehabilitation is how that price is paid back, and it is as much a part of orthopedic care as the splint.

Phase 1

Protect & Control

Early on, protect the healing tissue and control pain and swelling. Maintain movement at the joints that are not immobilized to limit stiffness elsewhere.

Phase 2

Restore Motion

As healing allows, regain range of motion with gentle, pain-guided movement. Stiffness sets in fast; restoring motion early prevents long-term loss.

Phase 3

Rebuild Strength

Progressive loading rebuilds the muscle lost to disuse — and reloads the bone, signalling it to remineralize. Load is the stimulus to adapt, applied gradually.

Phase 4

Proprioception & Balance

Re-train the joint’s position sense — especially after ankle and knee injury. Balance work measurably reduces re-injury and, in older adults, future falls.

Phase 5

Return to Activity

Graded, criteria-based return to work, sport, or daily life — progressing by function and confidence, not the calendar alone. Rushing this stage is how injuries recur.

Disuse Is Not Neutral

Rest past the point of necessity is itself harmful: muscle atrophies within days, cartilage depends on movement for nutrition, and unloaded bone loses mineral. This is the through-line of the module — the skeleton and the soft tissue around it are living, load-responsive systems. Where it is safe to move, movement is the treatment; the art is matching the load to the stage of healing.

Rehab Is a Team Sport

Physiotherapists, occupational therapists, and athletic therapists carry much of this work, and good outcomes depend on the patient understanding why the boring exercises matter. The clinician’s role is to set expectations early (“healing the bone is step one of several”), refer appropriately, and frame mobility as the goal from day one. Specific protocols and milestones are injury- and patient-specific — follow current local guidance and the treating therapist’s plan.

Managing Pain Without Over-Relying on Opioids

§ 22

Musculoskeletal injuries hurt, and treating pain humanely is a duty, not an optional kindness — under-treated pain is its own harm. But the reflexive reach for strong opioids in acute injury has its own well-documented costs, and a great deal of orthopedic pain is managed at least as well by simpler, layered, non-opioid measures. The principle is multimodal analgesia: combine approaches that work by different mechanisms, escalate by need, and use the lowest effective intensity for the shortest necessary time.

A Note on Doses

Consistent with this series, no drugs or doses are specified here. The tool below describes tiers of approach by mechanism, not a prescription. All analgesic choices — including which non-opioid agents are appropriate for a given patient, their contraindications, and any opioid use — must follow your current local protocols, formulary, and scope of practice.

Interactive Teaching Aid

Multimodal Analgesia Ladder

Slide to reflect pain severity and see the layered, mechanism-based approach — building up from foundational non-pharmacologic and non-opioid measures, with opioids reserved, brief, and never the first or only lever. This illustrates principles only; it names no agents or doses and does not replace local protocols or clinical judgement.

3/10

Mild

0 · None5 · Moderate10 · Severe

Layered Approach

Build up from the base, don’t jump to the top: foundational measures and non-opioid analgesia carry most acute musculoskeletal pain. Where opioids are appropriate they are an adjunct — lowest effective intensity, shortest duration, clear plan to stop — always per local protocol.

Non-Pharmacologic Levers Are Real Analgesia

Immobilizing and supporting the injury, elevation, ice for comfort, reducing a deformity, reassurance, and early appropriate movement (§ 13, § 21) all genuinely reduce pain — and they have no pharmacologic downside. They belong at the base of every plan, not as an afterthought once drugs have been given.

The Root-Cause Reading

Treating pain well and avoiding over-reliance on opioids are not in tension — multimodal care usually achieves better comfort with fewer harms. Reserve opioids for genuine need (e.g., severe pain, an acute reduction), use them briefly and with a plan to stop, and pair every analgesic plan with the non-drug measures that treat the source. This is humane and conservative — verify all specifics against current local protocols.

Human Variation, Not Disorder

§ 23

The musculoskeletal system comes in more shapes than the textbook diagram. Consider a composite patient: an adult, healthy and high-functioning, born with an extra, well-formed thumb — a congenital limb variation in the family of polydactyly^[6]. The digit is fully innervated, moves normally, and has served them their whole life. They present today for an unrelated rolled ankle.

Two charts could be written about this person. One pathologizes the hand the moment it is seen. The other describes it — accurately, neutrally — and moves on to the ankle the patient actually came in for. WestNet teaches the second.

The Reflexive Default

Labels the body as a problem

Leads the note with the variation as a “deformity,” before the presenting complaint
Assumes something must be corrected, even when nothing is impaired
Lets a single anatomical difference colour the whole encounter
Frames a functioning body part as an abnormality to be fixed
Misses the ankle — the reason the person actually came

The WestNet Lens

Describes; does not pathologize

Documents the variation factually and neutrally: present, well-formed, fully functional
Treats “variation” and “disorder” as different words for a reason
Asks the person how the limb works for them — function is the measure, not appearance
Respects that intervention is the patient’s choice, not a default expectation
Addresses the presenting complaint — the ankle — with full attention

Observe the Human, Not the Label

An anatomical variant in an otherwise healthy, high-functioning person is variation, not disorder. The body works. The chart should describe what is there — not rewrite a thriving person into a diagnosis. This is the same ethos that runs through every WestNet module: see the human first, and let function, dignity, and the patient’s own goals define what, if anything, needs doing.

Practical Note

Of course, document any variation that is clinically relevant — for anaesthetic, surgical, or imaging planning, or where the patient reports genuine functional limitation or wishes to discuss options. The point is not to ignore the body; it is to describe it accurately and respectfully, and to keep the presenting need in focus.

The Fracture Workflow — From Door to Disposition

§ 24

Step 1

Primary Survey & Safety

In significant trauma, ABCs first — a limb injury never outranks an airway. Control obvious haemorrhage; identify open fractures early.

Step 2

Focused History & Mechanism

What happened, what force, what time? Mechanism predicts pattern. A low-energy mechanism with a fracture flags possible fragility.

Step 3

Examine: Look, Feel, Move

Inspect for wounds, deformity, swelling. Palpate for point tenderness. Assess movement — cautiously. Document neurovascular status now.

Step 4

Apply Decision Rules

For ankle/knee, run the Ottawa Rules before reflexively imaging. Image when criteria are met — or when clinical concern persists.

Step 5

Immobilize & Manage Pain

Splint above and below the injury, allowing for swelling. Re-check neurovascular status after. Treat pain humanely and promptly.

Step 6

Look Upstream

Was this a fragility fracture? Flag bone-health assessment, falls risk, vitamin D / protein / activity — and arrange follow-up, not just a cast.

Escalate

Red Flags — Act Now

Open fracture, vascular compromise, or any sign of compartment syndrome: this is a surgical emergency. Escalate immediately — do not wait to complete the workflow.

References & Evidence Base

§ 25

The clinical positions in this module are drawn from peer-reviewed literature indexed by the U.S. National Library of Medicine (PubMed / PMC) and from major clinical-guideline bodies; each citation below links to the source on its publisher or guideline-body site.

On Sourcing

Journal references resolve to a PubMed search for the article title at the U.S. National Library of Medicine; guideline-body references link to the organization’s official site. Always consult the current full text and your local protocols — guidelines are revised, and this module is an educational summary, not a substitute for the primary literature.

Competency Assessment

§ 26

Twenty questions spanning the full module. Pass threshold: 14/20 (70%) for CE credit (upon accreditation approval).

Name the six axes used to describe a fracture precisely, and explain why “distal radius fracture” alone is inadequate.

What distinguishes an open fracture from a closed one, and why does it change management urgency?

A child has point tenderness over a growth plate but a normal X-ray. What is your management, and why?

State the Ottawa Ankle Rules criteria that mandate an ankle radiograph series.

List the components of a structured neurovascular assessment of an injured limb.

What is the earliest and most reliable sign of compartment syndrome, and why must you not wait for pulselessness?

State two core splinting principles and one warning sign that a splint is too tight.

Define a fragility fracture and name its three classic sites. Why is the first one so significant?

Name the four upstream, modifiable levers of bone health and briefly justify each.

Q10

Explain the difference between a congenital limb variation and a disorder, using the WestNet “observe the human, not the label” ethos.

Q11

A patient has snuffbox tenderness after a fall on the outstretched hand, with a normal first X-ray. What is the likely injury, why is it dangerous to miss, and what do you do?

Q12

Distinguish a sprain from a strain, and outline how grade I, II, and III injuries differ in findings and management implications.

Q13

List four red flags in low back pain and name the one cluster that constitutes a surgical emergency.

Q14

Before and after reducing a dislocation, what single assessment is mandatory, and why? Name two dislocations that are time-critical emergencies and the structure each threatens.

Q15

The traditional RICE mnemonic has shifted in emphasis. Describe the contemporary view of acute soft-tissue care and what “protected loading” means.

Q16

Differentiate acute (macrotrauma) from overuse (microtrauma) injury, and explain what the “athlete triad / relative energy deficiency” links to bone health.

Q17

A single joint is acutely hot, swollen, and painful. What is the must-exclude diagnosis, what test is central, and why does finding crystals not settle the question?

Q18

Name the two broad mechanistic families of osteoporosis pharmacotherapy and the bone cell each targets. Why does WestNet frame medication as “both/and” with the upstream levers?

Q19

Outline the phases of rehabilitation after a fracture, and explain why “rest past the point of necessity” is itself harmful.

Q20

Define multimodal analgesia and explain how to treat acute musculoskeletal pain well while avoiding over-reliance on opioids.

Accreditation & Faculty

§ 27

Accreditor	Status
ANCC (American Nurses Credentialing Center)	Application pending
ACCME (Accreditation Council for Continuing Medical Education)	Application pending
CARNA (College of Registered Nurses of Alberta)	Application pending
CPSA (College of Physicians & Surgeons of Alberta)	Planned

Course Director: WestNet Medical Clinical Education Division
Publication: WestNet Medical Publications • WestNet Catalog 731985456598 • ISBN 978-0-XXXXX-XXX-X (Pending)
Platform: WestNet Unified Health Platform / HealthOS v3.6

Glossary

Ref

Angulation	The angle between fracture fragments, named by the direction the apex points (e.g., dorsal, volar, varus, valgus).
Comminuted fracture	A fracture with more than two fragments, usually indicating higher-energy injury.
Compartment syndrome	Dangerous pressure within a closed fascial compartment that compromises perfusion. Earliest sign: pain out of proportion and on passive stretch. A surgical emergency.
Displacement	Movement of fracture fragments out of normal alignment, described by the position of the distal fragment.
Fragility fracture	A fracture from low-energy force (e.g., a fall from standing height) that would not break healthy bone — a hallmark of compromised bone strength.
Greenstick fracture	An incomplete fracture in which the elastic bone of a child bends and cracks on one side.
HealthOS	WestNet’s unified clinical platform for ER, inpatient, pharmacy, labs, imaging, and continuity of care across Canada and the USA.
Open (compound) fracture	A fracture where the skin is breached and bone communicates with the environment — high infection risk; a surgical emergency.
Osteoblast / Osteoclast	Bone-building and bone-resorbing cells, respectively. Their balance determines whether the skeleton gains or loses mass.
Osteoporosis	A skeletal condition of low bone mass and deteriorated microarchitecture, raising fracture risk.
Ottawa Ankle / Knee Rules	Validated, high-sensitivity decision rules that identify which acute ankle/midfoot and knee injuries require radiography — reducing unnecessary imaging.
Physis (growth plate)	The cartilaginous zone near the ends of a child’s long bones where lengthening occurs; the mechanically weakest part and a frequent injury site.
Polydactyly	A congenital limb variation in which a person is born with an additional digit. In a healthy, high-functioning person this is variation, not disorder.
Salter-Harris classification	A five-type system (mnemonic SALTR) describing fractures involving the growth plate; higher types carry greater risk of growth disturbance.
Wolff’s Law	The principle that bone adapts to the mechanical loads placed on it — strengthening under appropriate load and demineralizing with disuse.

Related WestNet Medical Modules

This module is part of a 12-title series. See also: Module 03 — Clinical Nutrition, Module 05 — Wound & Skin Care, Module 10 — Diabetes & Endocrine, and Module 11 — Elder Care & Delirium Management (falls & fragility in older adults).

Bone & MusculoskeletalTrauma

Continuing Education Information

Program Preface

Bone Is Living Tissue

Osteoclasts

Osteoblasts

Wolff’s Law

The Raw Materials

Describing a Fracture Precisely

Open or Closed

Location

Pattern

Displacement

Angulation

Shortening / Rotation

Fracture Patterns by Region

Distal Radius

Scaphoid

Proximal Humerus & Clavicle

Ankle & Malleoli

Hip / Proximal Femur

Tibial Shaft & Plateau

Dislocations & Reduction Principles

Document Neurovascular Status First

Reduce Promptly, Gently

Re-check & Immobilize

Know What You Cannot Reduce

Fractures in Children: Salter-Harris

The Ottawa Ankle & Knee Rules

Sprains & Strains: Grading the Soft Tissue

Mild — Microscopic

Moderate — Partial Tear

Severe — Complete Rupture

Low Back Pain: Sorting the Red Flags

Neurovascular Checks & Compartment Syndrome

Perfusion

Sensation

Motor

Pain Out of Proportion

Splinting Principles

Splinting & Casting Technique by Region

Acute Soft-Tissue Care: RICE and the Evidence

The Old Reflex

The Contemporary View

Sports & Overuse Injuries

Macrotrauma

Overuse / Microtrauma

Tendinopathy

Stress Reaction / Fracture

The Hot, Swollen Joint & Aspiration Basics

Diagnosis

Relief

Aseptic Technique

Know the Cautions

Fragility Fractures & Osteoporosis

A Common Assumption

What the Evidence Shows

Metabolic Bone Health: The Upstream Levers

Vitamin D

Calcium (Diet First)

Protein

Weight-Bearing & Resistance Activity

At the Bedside: A Communication Script

Osteoporosis Deep-Dive: Diagnosis & the Treatment Landscape

What Osteoporosis Is

Bone Densitometry (DXA)

Fracture-Risk Tools (FRAX)

Who to Treat

Antiresorptive Agents

Anabolic Agents

The Foundation

Secondary Causes

Bone-Health Self-Assessment

The Growing Skeleton: Pediatric Detail

Buckle (Torus) Fracture

Greenstick Fracture

Plastic (Bowing) Deformity

Apophysitis

Rehabilitation & Return to Mobility

Managing Pain Without Over-Relying on Opioids

Bone & Musculoskeletal
Trauma