Effect of lateral femoral cutaneous nerveblock on pain after total hip arthroplasty: a randomised, blinded, placebo-controlled trial

Total hip arthroplasty (THA) is a common procedure associated with moderate postoperative pain. No nerve block without loss of motor function has been documented for THA. We hypothesised that an ultrasoundguided lateral femoral cutaneous nerve (LFCN) block added to a multimodal postoperative pain regimen would reduce postoperative pain after THA.