Involvement of the lateral femoral cutaneous nerve as source of persistent pain after total hip arthroplasty.

This report describes a situation in which the lateral femoral cutaneous (LFC) nerve was the source of incisional pain in a patient after a total hip arthroplasty. The painful scar was denervated by an approach that resected just the posterior branch of the LFC nerve. This was done through an incision near the anterior superior iliac crest, avoiding any potential exposure of the implant. One of the 3 patients reported here had a coexisting meralgia paresthetica that was treated by the same operative approach. The orthopedic surgeon should include the LFC nerve as an origin of persistent pain after total hip arthroplasty.