The inferior gluteal nerve is superficial to the sciatic nerve. The tibial nerve eventually separates from the sciatic nerve and innervates the gastrocnemius muscle. The nerve passes beneath piriformis and through the greater sciatic foramen, quitting the pelvis. The tibial nerve is a branch of the sciatic nerve. Post operative sciatic nerve palsy is another possible complication. Endoscopic treatment for sciatic nerve entrapment has been investigated in deep gluteal syndrome. Seventeen percent of the population has their sciatic nerve coursing through the piriformis muscle. From the sacral plexus, the lower motor neuron travels down the sciatic nerve. The common fibular nerve is the smaller terminal branch of the sciatic nerve. In mice, ursolic acid induces neural regeneration after sciatic nerve injury. Consequently, damage to the sciatic nerve can affect the pudendal nerve as well. It is innervated by the sciatic nerve. The sciatic nerve is the largest nerve in the human body. For example, the pudendal nerve may actually originate off of the sciatic nerve. The semimembranosus is innervated by the tibial part of the sciatic nerve.