Microendoscopic Surgical Treatment for Lumbar Foraminal Stenosis with an Anomalous Lumbosacral Nerve Root: A Case Report

Abstract

We report a case of foraminal stenosis with conjoined nerve roots treated with microendoscopic surgery. A 69-year-old woman with right leg pain was referred to our department. Neurological examinations revealed L5 and S1 radiculopathy on the right side. MRI showed the presence of conjoined L5･S1 nerve root and that it was entrapped in the L5/S1 foramen on the right side. She underwent microendoscopic surgery. Operative findings showed anomalous conjoined nerve root was much less mobile than normal spinal nerve roots. The symptoms were relieved immediately after surgery. Microendscopic surgery was very useful for such a foraminal stenosis with conjoined nerve roots.