Intraneural Ganglion Cyst of the Sciatic Nerve Treated Using Arthroscopic Hip Surgery: A Case Report.

This is a rare case of sciatic neuropathy in a 46-year-old man secondary to an intraneural ganglion cyst from the hip joint extending upward to the lumbar plexus and the L5 nerve root. Magnetic resonance neurography showed that the joint fluid passed through a labral tear and extended rostrally along the articular branch and the peroneal portion of the sciatic nerve to near the L5 nerve root. The condition was treated by arthroscopic disruption of the joint connection to the nerve with resolution of the intraneural cyst and partial neurological recovery.