Isolated posterior femoral cutaneous neuropathy is rarely encountered. Electrophysiological documentation has only been made in a few cases. We present a 73 year-old male patient who underwent a coronary angiography procedure which was performed on his right femoral artery 2 months prior of referring to our electromyography (EMG) laboratory. After this event, he had an operation in order to evecuate the hematoma formed in the right inguinal region during the procedure. In the postoperative state he began to complain of a pain and numbness in his right posterior thigh; which had radiated towards his right hip and popliteal fossa. In addition to routine electrophysiological nerve conduction studies contucted in lower extremities; we performed posterior femoral cutaneous nerve conduction using the method described by Dumitru and Nelson. While normal response can be obtained easily on the left side; no potential could be obtained from the right.