Abstract
Peroneal-nerve paralysis following adduction injury to the knee or fracture of the proximal end of the fibula is well known. Less widely recognized is the impairment of nerve function that may follow an inversion sprain of the ankle. Two cases of this syndrome are reported. Peroneal-nerve paralysis complicating ankle sprains may not be as rare as the literature would suggest. In the patient who does not fully regain a stable ankle after a sprain, the disability is often attributed to ligament laxity. In such cases, peroneal-nerve function should be tested to determine whether a mild peroneal-nerve paralysis is contributing to the disability.

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