Medial femoral cutaneous nerve(MFCN), a sensory branch of the femoral nerve, supplies the skin over the anteromedial aspect of the thigh and knee. Posterior femoral cutaneous nerve(PFCN), comprised of fibers originating from the anterior and posterior divisions of the first three sacral segments, supplies the skin over the posterior aspect of the thigh.

Forty nerves of twenty healthy adults, ages from 20 to 58, were tested. The onset and peak latencies of MFCN were 2.3⁑0.2 ms and 2.9⁑0.2 ms respectively. The baseline to peak amplitude was 6.5⁑2.3 ㄍV. The onset and peak latencies of PFCN were 2.4⁑0.2 ms and 2.9⁑0.2 ms respectively. The baseline to peak amplitude was 7.1⁑1.7 ㄍV.