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Chronic ankle instability — MRCEM SBA MCQ

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ModerateAnkle and FootChronic ankle instabilityMRCEM SBA

A 24-year-old basketball player reports recurrent ankle giving way after repeated inversion sprains. Anterior drawer testing is positive and single-leg balance is poor on the affected side. What is the most likely diagnosis?

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Correct answer: D — Chronic ankle instability

Recurrent giving way after lateral ankle sprain with mechanical laxity and poor balance indicates chronic ankle instability. It combines ligament laxity, sensorimotor deficit and confidence loss. Rehabilitation targets proprioception, peroneal strength and sport-specific control.

Reference: BJSM ankle sprain consensus