The<unk><unk>  carries both motor and sensory axons. It stems from the spinal<unk> s S2-S4 of the sacral plexus. The<unk>  progresses through the piriformis and coccygeus muscles and exits the pelvis by passing through the greater sciatic foramen. The<unk><unk>  then re-enters the pelvic cavity by passing through the lesser sciatic foramen. After re-entering the pelvis, it breaks off into three branches known as the inferior rectal<unk> , the perineal<unk> , and then dorsal sensory<unk>  of the penis or clitoris. These three<unk> s are also referred to as the terminal branches, and they are more susceptible to injuries due to their locations. There are also four levels of<unk>  compressions:<unk>  below the piriformis muscle,<unk>  that occurs between the sacrospinous ligament and sacrotuberous ligament (most common cause),<unk>  in the Alcock canal, and<unk>  of the terminal branches. Although there has been no evidence for a direct functional connection between the<unk><unk>  and sacrotuberous ligament, many clinical studies have pointed at the sacrotuberous ligament as a potential cause of<unk> . Around the ischial level of the spine,<unk><unk>  runs between the sacrotuberous ligament and the sacrospinous ligament (posteriorly and anteriorly, respectively), giving way for potential compression of the<unk><unk> .
Pudendal nerve entrapment
Nerve compression syndrome
Radiation-induced lumbar plexopathy
Peroneal nerve paralysis
Accessory nerve disorder
Urethral stricture
Median nerve palsy
Post-vasectomy pain syndrome