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orthopaedics emergency-medicine

Lauge-Hansen Classification (Ankle Fractures)

Classifies ankle fractures by mechanism (supination vs pronation) and stage of ligament/bone injury. Guides surgical vs conservative management.

Score interpretation

Weber A — Isolated Lateral Malleolus (Stable)

→ Stable: analgesia, splint or boot and weight-bearing as tolerated; further follow-up may not be needed (BOAST 12).

Weber B — Isolated Lateral Malleolus

→ Usually stable without medial tenderness or talar shift: splint and weight-bear as tolerated. If stability is uncertain, review within 2 weeks with repeat (weight-bearing) radiographs (BOAST 12).

Bimalleolar / Trimalleolar or Equivalent — Unstable

→ Reduce and splint a deformed ankle urgently. Early fixation (day of or day after injury) for most patients under 60; over 60 a close contact cast is an option if reduction is maintained. Assess the syndesmosis at surgery (BOAST 12).

Weber C — Syndesmotic Injury (Unstable)

→ Unstable: fix the fibula and stabilise the syndesmosis if unstable. X-ray the whole leg if a proximal fibular (Maisonneuve) fracture is suspected (BOAST 12).

Interpretation bands for the Lauge-Hansen. Apply clinical judgement and local guidance.

References

Related

Curated clinical cross-links plus same-class fallbacks.

Decision support only — verify against a current formulary, NICE, or your local guideline before clinical use.