Ankle fracturesMANAGEMENT

ANKLE · 12 SECTIONS

⚲

630 items

☷ Legend

01Approach to the Critical Patient/attcp69

Immediate threats and triggers

›Time-critical priorities

›Airway compromise or altered mental status triggers resuscitation bay

›Hemodynamic instability triggers hemorrhage search and trauma activation

›Open fracture suspicion triggers antibiotics and tetanus pathway before delayed imaging when feasible

›Fracture-dislocation triggers immediate reduction attempt if neurovascular threat or skin tenting

›Rapidly progressive pain or tense compartments triggers compartment syndrome escalation

Limb threat and neurovascular

›Limb threat screen

›Dorsalis pedis pulse

›Doppler if nonpalpable

›Compare contralateral

›Posterior tibial pulse

›Doppler if nonpalpable

›Compare contralateral

›Capillary refill

›Prolonged refill triggers urgent reduction or loosen splint

›Cool limb triggers vascular concern escalation

›Motor function

›Tibialis anterior dorsiflexion

›Gastrocnemius plantarflexion

›Extensor hallucis longus

›Peroneals eversion

›Sensory function

›Deep peroneal first dorsal web space

›Superficial peroneal dorsum foot

›Tibial plantar foot

›Sural lateral foot

›Saphenous medial foot

Skin and soft tissue threat

›Soft tissue risk

›Medial skin blanching or tenting

›Immediate reduction and splint

›Urgent orthopedics notification

›Fracture blisters

›Splint only

›Avoid circumferential cast in swelling phase

›Open wound near malleoli

›Treat as open fracture until proven otherwise

›Sterile saline-moistened dressing

Early immobilization and analgesia

›Early stabilization bundle

›Elevation above heart

›Swelling reduction

›Pain reduction

›Ice with skin protection

›15 to 20 minutes intermittently

›Avoid direct skin contact

›Posterior short leg plus stirrup splint for unstable pattern suspicion

›Neutral dorsiflexion position

›Post-splint neurovascular recheck

Consult and transfer triggers

›Immediate orthopedics triggers

›Open fracture

›Urgent operative pathway

›Transfer if no capability

›Fracture-dislocation

›Reduction required

›Post-reduction instability likely operative

›Bimalleolar fracture

›Unstable pattern

›Operative evaluation

›Trimalleolar fracture

›Unstable pattern

›Operative evaluation

›Syndesmotic injury suspicion with instability

›Widened medial clear space or talar shift

›Operative evaluation

›Neurovascular deficit after reduction and splint

›Emergent escalation

›Vascular imaging and specialist involvement

›Threatened skin medially

›Emergent reduction

›Urgent operative planning

02History/hx51

Mechanism and timeline

›Injury context

›Mechanism

›Twisting rotational injury

›Fall from height or axial load

›High-energy motor vehicle collision

›Sports inversion or eversion

›Time since injury

›Time since last weight-bearing

›Time since any attempted reduction

›Immediate deformity or dislocation

›Spontaneous reduction history

›Persistent malalignment

Symptoms and red flags

›Symptom profile

›Pain severity and trend

›Pain out of proportion to exam

›Escalating pain despite immobilization

›Paresthesia or numbness

›Dorsum foot distribution

›Plantar foot distribution

›Coldness or color change

›Pallor

›Cyanosis

›Inability to bear weight

›Immediately after injury

›In ED after analgesia

Comorbidities and risk modifiers

›Patient factors

›Anticoagulants or antiplatelets

›Bleeding risk

›Hematoma risk

›Diabetes mellitus

›Neuropathy masking symptoms

›Wound complication risk

›Peripheral arterial disease

›Higher ischemia risk

›Lower healing potential

›Osteoporosis or fragility mechanism

›Low-energy twist in older adult

›Prior fragility fracture history

›Smoking or vaping nicotine

›Delayed union risk

›Wound complication risk

Prior injuries and baseline function

›Baseline and prior history

›Prior ankle fracture or surgery

›Hardware presence

›Baseline range of motion limitation

›Baseline ambulation

›Independent versus assist devices

›Stairs ability

›Occupational or athletic demands

›High-demand athlete

›Heavy labor requirements

03Physical Exam/exam67

Inspection and palpation

›Local exam

›Deformity and alignment

›Talar shift appearance

›Medial malleolar prominence

›Swelling distribution

›Lateral malleolus region

›Medial malleolus region

›Posterior ankle swelling

›Ecchymosis

›Medial bruising with syndesmosis concern

›Plantar ecchymosis with hindfoot injury concern

›Skin integrity

›Abrasions or lacerations near malleoli

›Blanching or tenting over medial malleolus

›Fracture blisters

›Point tenderness

›Posterior edge or tip of lateral malleolus

›Posterior edge or tip of medial malleolus

›Base of fifth metatarsal

›Navicular

Neurovascular and compartment

›Distal perfusion and nerve function

›Pulses and Doppler signals

›Dorsalis pedis

›Posterior tibial

›Capillary refill and skin temperature

›Compare contralateral

›Delayed refill trigger loosening and reassessment

›Motor exam

›Dorsiflexion

›Plantarflexion

›Great toe extension

›Foot eversion

›Sensory exam

›Deep peroneal

›Superficial peroneal

›Tibial

›Sural

›Saphenous

›Compartment syndrome screen

›Pain with passive toe extension

›Escalation if worsening despite analgesia

›Serial exams if high-energy mechanism

›Tense compartments in leg

›Anterior

›Lateral

›Deep posterior

›Superficial posterior

Stability tests and associated injuries

›Ligament and syndesmosis assessment

›Syndesmosis tenderness over anterior inferior tibiofibular ligament

›Higher suspicion with external rotation mechanism

›Higher suspicion with proximal fibula tenderness

›External rotation stress pain

›Avoid forceful testing if fracture suspected unstable

›Imaging-based assessment preferred in acute fracture

›Proximal fibula tenderness

›Maisonneuve pattern concern

›Full tibia-fibula imaging consideration

PITFALLS

›Common pitfalls

›Missed posterior malleolus fracture without true lateral view

›CT consideration when plafond involvement suspected

›Post-reduction films required

›Missed syndesmotic injury in isolated fibula fracture

›Mortise evaluation for medial clear space

›Tibiofibular clear space assessment

›Underestimation of soft tissue threat

›Medial skin blanching indicates urgent reduction need

›Delayed swelling can worsen after discharge

04Differential Diagnosis/ddx42

Traumatic and orthopedic mimics

›Alternative diagnoses

›Ankle sprain

›Lateral ligament injury

›Ottawa Ankle Rules negative supports no fracture imaging need

›Maisonneuve fracture

›Proximal fibula fracture with syndesmotic disruption

›Ankle mortise instability despite subtle ankle findings

›Talus fracture

›Lateral process fracture after snowboarding mechanism

›CT often required

›Calcaneus fracture

›Axial load mechanism

›Hindfoot pain predominance

›Lisfranc injury

›Midfoot plantar ecchymosis

›Pain with forefoot abduction stress

›Base of fifth metatarsal fracture

›Lateral foot pain

›Avulsion versus Jones pattern distinction

›Navicular fracture

›Medial midfoot pain

›Consider CT if radiographs negative

Vascular and neurologic threats

›Limb-threatening conditions

›Acute arterial injury

›Pulseless foot

›Expanding hematoma

›Compartment syndrome leg

›Pain out of proportion

›Pain with passive stretch

›Peripheral nerve injury

›Peroneal neuropraxia with fibular injury

›Tibial nerve symptoms with posterior swelling

Infectious and inflammatory differentials

›Nontraumatic alternatives

›Cellulitis over malleolus

›Fever

›Erythema with minimal trauma history

›Septic arthritis ankle

›Severe pain with minimal swelling history

›Immunocompromised risk

›Gout flare

›Prior episodes

›Hyperuricemia history

05Laboratory Tests/lt27

Minimal routine testing

›Labs not routinely needed in isolated closed fracture

›No baseline labs for uncomplicated discharge

›Point-of-care glucose in altered mental status or diabetes concern

Operative or sedation pathway

›Pre-procedure or operative planning labs

›Complete blood count for anemia or bleeding concern

›Anticoagulant use

›High-energy trauma

›Electrolytes and renal function for procedural sedation planning

›Significant comorbidities

›Dehydration concern

›Coagulation studies when on anticoagulants or liver disease

›INR for warfarin

›Anti-factor Xa per local protocol for selected DOAC scenarios

Open fracture and infection risk

›Open fracture adjunct labs when clinically indicated

›Complete blood count for systemic infection concern

›Fever

›Contaminated wound

›Venous blood gas or lactate for shock concern

›Polytrauma

›Hypoperfusion

Rhabdomyolysis and crush concerns

›Crush or prolonged entrapment considerations

›Creatine kinase for rhabdomyolysis concern

›Prolonged compression

›Dark urine

›Potassium for hyperkalemia risk

›Crush injury

›ECG changes

06Diagnostic Tests/dt88

Scoring Systems

›Classification and decision support

›Weber classification fibular fracture level relative to syndesmosis

›Weber A

›Infrasyndesmotic

›Usually stable if medial structures intact

›Weber B

›Transsyndesmotic

›Stability depends on deltoid and syndesmosis integrity

›Weber C

›Suprasyndesmotic

›Syndesmotic disruption likely

›Lauge-Hansen mechanism-based patterns

›Supination-adduction

›Lateral malleolus avulsion or distal fibula fracture

›Medial malleolus vertical fracture possible

›Supination-external rotation

›Anterior inferior tibiofibular ligament injury

›Spiral distal fibula fracture

›Posterior malleolus injury possible

›Medial deltoid or medial malleolus injury late

›Pronation-abduction

›Medial malleolus or deltoid injury early

›Comminuted fibular fracture

›Pronation-external rotation

›Medial injury early

›High fibular fracture possible

›Syndesmotic disruption common

›AO OTA ankle malleolar fractures

›Distal fibula type

›Infrasyndesmotic

›Transsyndesmotic

›Suprasyndesmotic

›Medial malleolus involvement

›Isolated

›With bimalleolar injury

›Posterior malleolus involvement

›Trimalleolar pattern indicator

›CT for articular involvement assessment

Radiographs

›Plain film strategy

›Standard ankle series

›Anteroposterior

›Mortise

›Lateral

›Foot radiographs when Ottawa foot criteria met

›Base of fifth metatarsal tenderness

›Navicular tenderness

›Tibia-fibula radiographs when proximal fibula tenderness

›Maisonneuve suspicion

›Full-length imaging when needed

›Post-reduction radiographs

›Confirm congruent mortise

›Confirm alignment before discharge

›Radiographic instability indicators

›Talar shift

›Medial clear space widening

›Lateral talar translation

›Syndesmotic widening

›Increased tibiofibular clear space

›Decreased tibiofibular overlap

›Posterior malleolus fracture fragment

›Size and displacement estimation limited on X-ray

›CT for surgical planning

MRI

›MRI indications limited in acute ankle fracture

›Occult fracture with persistent pain and negative radiographs

›Bone marrow edema detection

›High sensitivity for trabecular injury

›Ligamentous injury characterization when radiographs equivocal

›Syndesmosis complex

›Deltoid ligament

›Osteochondral lesion suspicion

›Persistent locking or catching

›Chronic pain after initial management

›Contraindications and limitations

›Metal artifact with hardware

›Limited acute management impact compared with stress imaging or CT

›CT indications

›Posterior malleolus fracture characterization

›Articular surface involvement

›Fragment morphology for fixation planning

›Pilon fracture suspicion distal tibial plafond

›Comminution

›Intra-articular extension

›Talar dome or talus fracture suspicion

›Lateral process fracture concern

›Surgical planning

›Subtle mortise incongruity despite reduction

›Entrapped fragment concern

›Intra-articular loose body concern

07Disposition/dispo36

Discharge versus admission

›Disposition decision framework

›Discharge appropriate when stable pattern and safe mobility

›Neurovascularly intact

›Pain controlled with oral regimen

›No skin threat

›Reliable follow-up

›Crutches or walker safe use

›Admission or observation considerations

›Uncontrolled pain

›Inability to mobilize safely

›Significant comorbidities affecting safety

›Social barriers to non-weight-bearing

›Transfer or emergent specialist care triggers

›Open fracture

›Neurovascular compromise

›Compartment syndrome concern

›Irreducible dislocation

›Threatened skin

Follow-up timing and immobilization plan

›Follow-up and imaging plan

›Stable isolated lateral malleolus without mortise widening

›Orthopedics or fracture clinic follow-up within 7 days

›Repeat radiographs per local protocol

›Suspected unstable pattern after reduction and splint

›Orthopedics follow-up within 24 to 72 hours

›Surgical evaluation expectation

›Open fracture or fracture-dislocation

›Orthopedics same day

›Operative pathway

Weight-bearing and mobility

›Mobility guidance

›Non-weight-bearing default for unstable patterns

›Bimalleolar

›Trimalleolar

›Syndesmotic instability

›Protected weight-bearing only when confirmed stable by specialist protocol

›Walking boot option

›Early range of motion when allowed

08Treatment/t136

Immediate life-saving interventions

›Immediate stabilization

›Hemorrhage or shock management when polytrauma

›Balanced resuscitation per trauma protocol

›Tranexamic acid per trauma protocol timing

›Limb-threatening ischemia actions

›If pulseless foot, immediate reduction and splint

›If persistent pulselessness after reduction, emergent vascular consultation

›Open fracture immediate actions

›Sterile dressing

›Antibiotics within 60 minutes target

›Tetanus prophylaxis pathway

Immobilization and Splinting

›Immobilization strategy

›Lower extremity splint options

›Posterior short leg

›Neutral dorsiflexion position

›Heel padding

›Stirrup

›Medial and lateral support

›Control inversion and eversion

›Posterior short leg plus stirrup

›Preferred for unstable ankle fractures

›Better rotational control

›Technique and safety checks

›Extra padding over malleoli

›Reduce pressure injury risk

›Avoid focal constriction

›Avoid circumferential cast in acute swelling phase

›Compartment and skin risk

›Plan for later cast or boot

›Post-splint neurovascular documentation

›Pulses

›Capillary refill

›Motor and sensation

Reduction

›Reduction indications and pathway

›Indications

›Fracture-dislocation

›Neurovascular compromise

›Threatened skin medially

›Gross malalignment

›Contraindications or caution

›Suspected vascular transection with expanding hematoma

›Immediate specialist involvement

›Avoid repeated attempts

›Pediatric physeal injury concern

›Gentle technique

›Early pediatric orthopedics involvement

›Analgesia and anesthesia options

›Non-opioid analgesia

›Acetaminophen oral 15 mg/kg

›Maximum 1000 mg per dose

›Maximum 4000 mg per 24 hours

›Ibuprofen oral 10 mg/kg

›Maximum 600 mg per dose

›Avoid in significant renal impairment

›Opioid analgesia

›Morphine IV 0.05 mg/kg

›Repeat 0.025 to 0.05 mg/kg every 10 minutes to effect

›Monitor respiratory status

›Fentanyl IV 1 mcg/kg

›Repeat 0.5 mcg/kg every 5 minutes to effect

›Short duration useful for reduction

›Regional anesthesia

›Hematoma block when appropriate

›Local anesthetic dosing per weight and agent

›Avoid intravascular injection

›Peripheral nerve block by trained clinician

›Popliteal sciatic block for ankle analgesia

›Saphenous block adjunct for medial coverage

›Procedural sedation when required

›Monitoring and readiness

›Continuous pulse oximetry

›Capnography if available

›Suction setup ready

›Airway equipment ready

›Bag-mask ventilation

›Oral and nasal airways

›Resuscitation medications available

›Naloxone for opioid reversal

›Flumazenil when benzodiazepine reversal indicated and safe

›Ketamine IV 1 mg/kg

›Additional 0.25 to 0.5 mg/kg every 5 to 10 minutes as needed

›Emergence reaction mitigation per local protocol

›Propofol IV 0.5 mg/kg

›Additional 0.25 to 0.5 mg/kg every 1 to 3 minutes to effect

›Hypotension risk higher in older adults

›Technique principles

›Traction and countertraction

›Inline traction on foot

›Countertraction at leg

›Deformity exaggeration to disengage fragments when needed

›Gentle increase then reverse mechanism

›Avoid repeated forceful attempts

›Mortise restoration

›Medial translation correction if talar shift

›Neutral dorsiflexion positioning

›Post-reduction requirements

›Immediate neurovascular reassessment

›Pulses and cap refill

›Motor and sensation

›Post-reduction radiographs

›Mortise congruency

›Alignment confirmation

›Splint in position of stability

›Posterior short leg plus stirrup common choice

›Elevation instructions

›Failed reduction pathway

›Persistent deformity or instability triggers urgent orthopedics

›Persistent neurovascular deficit triggers emergent escalation

Open fracture medications and timing

›Open fracture medication pathway

›Antibiotics timing target

›First dose within 60 minutes

›Do not delay for imaging if obvious open injury

›Gustilo type I or II coverage

›Cefazolin IV 2 g

›Repeat every 8 hours per local protocol

›Severe beta-lactam allergy alternative per local protocol

›Gustilo type III or gross contamination

›Cefazolin IV 2 g

›Plus gram-negative agent per local protocol

›Farm contamination anaerobic coverage per local protocol

›Tetanus prophylaxis

›Unknown or incomplete immunization and dirty wound triggers tetanus immune globulin plus vaccine

›Up-to-date immunization and dirty wound triggers booster per interval criteria

DVT prophylaxis when relevant

›Venous thromboembolism risk management

›Risk factors

›Prolonged non-weight-bearing

›Prior venous thromboembolism

›Active malignancy

›Estrogen therapy

›Significant obesity

›Prophylaxis decision per local protocol

›Pharmacologic prophylaxis when high risk and low bleeding risk

›Mechanical measures when pharmacologic contraindicated

›Documentation elements

›Risk assessment recorded

›Shared decision discussion when outpatient

09Special Populations/sp33

Pregnancy

›Pregnancy considerations

›Imaging safety principles

›Plain radiographs acceptable with shielding when feasible

›CT only when benefits outweigh risks

›Analgesia selection

›Acetaminophen preferred

›NSAID avoidance in later pregnancy per obstetric guidance

›Venous thromboembolism risk

›Higher baseline risk in pregnancy

›Prophylaxis decisions with obstetrics input when immobilized

Geriatric

›Older adult considerations

›Fragility fracture pattern likelihood

›Low-energy twist can still be unstable

›Lower threshold for advanced imaging when pain disproportionate

›Delirium and sedation risk

›Opioid-sparing strategies

›Careful procedural sedation dosing

›Mobility and safety constraints

›Admission threshold lower when cannot do non-weight-bearing safely

›Early physiotherapy involvement when available

Pediatrics

›Pediatric considerations

›Growth plate injury risk

›Salter-Harris patterns around distal tibia and fibula

›Gentle reduction technique

›Imaging interpretation caveats

›Open physes mimic fracture lines

›Comparison views sometimes helpful

›Analgesia dosing weight-based

›Acetaminophen 15 mg/kg

›Ibuprofen 10 mg/kg

›Nonaccidental trauma consideration when inconsistent history

›Delay in presentation

›Multiple injuries

10Background/b30

Epidemiology

›Population patterns

›Common injury in sports and falls

›Rotational mechanisms frequent

›Older adults increased incidence due to falls

›Unstable patterns common with bimalleolar involvement

›Higher operative fixation rates

›Worse outcomes with persistent mortise incongruity

Pathophysiology

›Injury mechanics and structures

›Ankle mortise stability depends on fibula length and syndesmosis integrity

›Talar shift increases contact stress

›Deltoid ligament disruption destabilizes mortise

›Posterior malleolus role in syndesmotic stability

›Posterior inferior tibiofibular ligament attachment

›CT improves characterization of fragment geometry

›High-energy injuries increase soft tissue compromise

›Swelling and blistering risk

›Compartment syndrome risk higher

Therapeutic Considerations

›Treatment rationale

›Congruent mortise as primary outcome driver

›Persistent talar shift predicts arthritis risk

›Reduction urgency when skin or perfusion threatened

›Splinting over casting in acute swelling

›Pressure injury avoidance

›Compartment risk mitigation

›Operative versus nonoperative decision logic

›Stable isolated lateral malleolus may be nonoperative

›Bimalleolar and trimalleolar generally unstable and operative evaluation needed

›Decision rules and guideline framing

›Ottawa Ankle Rules reduce unnecessary imaging with high sensitivity for fracture

›Procedural sedation safety practices aligned with ACEP policy guidance

11Patient Discharge Instructions/pdi25

copy discharge instructions

›Discharge instructions package

›Splint care

›Keep splint clean and dry

›Do not insert objects inside splint

›If splint becomes wet or damaged, urgent reassessment

›Swelling control

›Elevate above heart as much as possible for 48 to 72 hours

›Ice over splint intermittently with skin protection

›Weight-bearing

›Non-weight-bearing unless explicitly cleared

›Crutches or walker use instructions

›Pain control

›Acetaminophen as directed

›Ibuprofen as directed if safe

›Opioid only if prescribed and needed

›Return to ED immediately

›Increasing pain not relieved by rest and medications

›New numbness or weakness in foot or toes

›Toes becoming cold, pale, or blue

›Increasing tightness or pressure in splint

›Fever or wound drainage

›Splint too tight after swelling increases

›Follow-up

›Orthopedics or fracture clinic timing per plan

›Bring post-reduction images and discharge paperwork

12References/r26

Clinical guidelines and evidence sources

›Core references

›Ottawa Ankle Rules original derivation and validation studies

›High sensitivity for clinically significant ankle fractures

›Imaging reduction utility in ED practice

›AAOS patient and clinician educational resources for ankle fractures

›Nonoperative versus operative overview

›Rehabilitation principles

›BOAST guidance relevant to ankle fracture management pathways

›Specialist assessment timing expectations where applicable

›Soft tissue and swelling considerations

›NICE guidance relevant to fractures and immobilization complications

›Venous thromboembolism risk assessment with lower limb immobilization

›Shared decision guidance where applicable

›ACEP clinical policy or position statements relevant to procedural sedation

›Monitoring and safety standards

›Discharge criteria after sedation

Coding and terminology

›Standardized terminology

›ICD-10 ankle fracture categories

›Lateral malleolus fracture

›Medial malleolus fracture

›Bimalleolar fracture

›Trimalleolar fracture

›SNOMED CT concepts for ankle fracture and ankle fracture-dislocation

›Closed fracture

›Open fracture

›Syndesmotic disruption

Evidence & Review

Reviewed by SymptomDx Medical Team · Last reviewed March 6, 2026

SymptomDx is an educational tool for medical professionals. It does not replace clinical judgment. Verify all clinical data and drug dosages with authoritative sources.