Mechanisms often direct impact or rotational injuries with associated ankle pathology
Functional anatomy
Fibular shaft limited weight-bearing role supports nonoperative care in many isolated cases :contentReference[oaicite:17]{index=17}
Pathophysiology
Force to pattern mapping
Direct blow producing transverse or short oblique pattern
Torsion producing spiral pattern
Associated injury mechanisms
External rotation ankle force can propagate proximally and injure syndesmosis and interosseous membrane with proximal fibula fracture pattern :contentReference[oaicite:18]{index=18}
Neurovascular proximity
Common peroneal nerve risk near fibular neck
Superficial peroneal nerve risk with lateral compartment swelling
Therapeutic Considerations
Nonoperative rationale
Fibular shaft not primary load-bearing bone
Weight bearing as tolerated often reasonable for isolated shaft fractures :contentReference[oaicite:19]{index=19}
Instability detection rationale
Medial ankle injury or proximal fibular tenderness warrants full fibula imaging to exclude Maisonneuve pattern :contentReference[oaicite:20]{index=20}
Swelling and casting rationale
Early swelling increases risk of cast-related pressure injury
Splinting preferred initially with follow-up conversion if needed
Patient Discharge Instructions
copy discharge instructions
Home care and activity
Walking boot or splint as directed
Weight bearing as tolerated unless instructed otherwise
Elevation above heart level when resting for first 48 hours
Ice 15 to 20 minutes up to every 2 to 3 hours for first 48 hours
Pain plan
Acetaminophen 1000 mg every 6 to 8 hours as needed
Ibuprofen 400 mg every 6 to 8 hours as needed if safe
Opioid only if prescribed for breakthrough pain
Splint and skin care
Keep splint dry
Do not insert objects to scratch under splint
Padding adjustment if focal pressure pain
Return to ED immediately for
Increasing pain not controlled with medication
New numbness or tingling in foot
Weakness or foot drop
Toes cold, pale, or blue
Splint too tight with increasing swelling
Fever or wound drainage
Follow-up
Orthopedics or fracture clinic within 7 to 14 days
EAST practice management guideline update on open fracture antibiotics duration :contentReference[oaicite:24]{index=24}
Review of antimicrobial prophylaxis timing and regimen by Gustilo grade :contentReference[oaicite:25]{index=25}
Template source file
Fracture clinical management system instructions
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