To establish a diagnostic test for femoral neuropathy we have stimulated the femoral nerve above and below the inguinal ligament in 42 persons of healthy Korean free of axonal or muscular disease.

Mean latencies from above the inguinal ligament to the motor point of the vastus medialis are 5.5±0.5 msec in men, 5.1±0.5 msec in women and those below are 4.6±0.4 msec in men 4.2±0.5 msec in women.

The average delay across the inguinal ligament is 0.9±0.3 msec when the average distance across stimulating electrode is 4.9±0.1 cm.

This study is useful in differentiating neuropathic disease from myopathic or others in patients with distal atrophy.