Lateral Ankle Sprain: From Acute Protection to Return to Sport

Assessment

Determine injury mechanism, ability to bear weight, swelling, bruising, tenderness, ROM, strength and perceived instability. Apply a validated fracture decision rule such as the Ottawa Ankle Rules when appropriate.

• Palpate bony landmarks and lateral ligament region.
• Assess weight-bearing dorsiflexion later in rehabilitation, calf strength, single-leg balance and hopping as tolerated.
• Consider syndesmotic injury when pain location/mechanism and examination do not fit a routine lateral sprain.

Red flags and differentials

• Suspected fracture, gross deformity, neurovascular compromise or inability to safely weight bear requires appropriate escalation.
• Consider syndesmotic sprain, osteochondral injury, peroneal tendon injury or significant instability when recovery is atypical.

Management and progression

Evidence-based care favors progressive weight bearing with external support as needed and structured exercise rather than prolonged immobilization for typical sprains.

• Early phase: control symptoms while restoring tolerable weight bearing and ankle motion.
• Build calf and ankle strength, then progressive balance and perturbation tasks.
• Advance to running, deceleration, cutting, hopping and sport-specific reactive tasks.
• Neuromuscular/balance exercise is important for reducing recurrent sprain risk, particularly when instability persists.

Return-to-sport reasoning

• Check pain and swelling response, ankle ROM, strength/endurance, dynamic balance, hopping/agility, confidence and completion of sport-specific training.
• Progress only when the athlete tolerates the current workload without meaningful next-day deterioration.
• External bracing/taping may be useful for selected athletes with recurrence risk but should accompany—not replace—rehabilitation.

Common mistakes and summary

• Do not clear an athlete because swelling is gone while balance and power remain impaired.
• Do not stop rehabilitation after basic walking returns.
• A successful plan restores capacity and confidence and includes recurrence prevention.