Entrapment neuropathies of the femoral nerve are uncommon clinical conditions. The symptoms of femoral mononeuropathy could manifest as acute or subacute severe pain in the inguinal region, weakness of the function of quadriceps femoris muscle and a decreased patellar reflex. We present a case with a 40-year-old woman suffering from pain, numbness and progressive weakness in her lower right limb due to an uncommon femoral nerve compression. The case were successfully treated with surgery. The femoral nerve was discovered to be trapped at the level of the inguinal ligament by a scar tissue. This scar tissue was incised and the femoral nerve was relieved. After the operation, her neurological deficits improved completely. Femoral nerve entrapment should be taken into consideration in such patients in order to prevent unnecessary surgical interventions.
Keywords: Femoral nerve, nerve entrapment syndrome, surgical decompression.