Surgical decompression for peroneal nerve palsy after total knee arthroplasty.

by K a Krackow, D C Maar, M a Mont, C Carroll
Clinical orthopaedics and related research ()


Five patients were treated by operative exploration and decompression of the peroneal nerve for peroneal nerve palsy complicating total knee arthroplasty (TKA). All patients had failed to demonstrate improvement in the peroneal nerve function despite extended conservative care. The procedure was performed five to 45 months after the index TKA. Patients were evaluated and graded preoperatively and postoperatively using the Modified Nerve Palsy Scale of Weber, Daube, and Coventry. All patients demonstrated improved nerve function. Four of five patients had full peroneal nerve recovery. All patients were able to discontinue their ankle-foot orthoses. This is a rare complication of TKA, and when conservative nonoperative measures do not lead to sufficient improvement in nerve function, consideration may be given to operative decompression of the peroneal nerve.

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