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Pudendal Neuropathy
The pudendal nerve is the main nerve of the perineum. It is a Mixed nerve, mixed (motor and sensory) nerve and also conveys Sympathetic nervous system, sympathetic Autonomic nervous system, autonomic fibers. It carries sensation from the external genitalia of both sexes and the skin around the Human anus, anus and perineum, as well as the Motor neuron, motor supply to various pelvic muscles, including the external sphincter muscle of male urethra, male or external sphincter muscle of female urethra, female external urethral sphincter and the external anal sphincter. If damaged, most commonly by childbirth, loss of sensation or fecal incontinence may result. The nerve may be temporarily anesthetized, called pudendal anesthesia or pudendal block. The pudendal canal that carries the pudendal nerve is also known by the eponymous term "Alcock's canal", after Benjamin Alcock, an Irish anatomist who documented the canal in 1836. Structure Origin The pudendal nerve is paired, me ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Posterior Cutaneous Nerve Of Thigh
The posterior cutaneous nerve of the thigh (also called the posterior femoral cutaneous nerve) is a sensory nerve of the thigh. It is a branch of the sacral plexus. It supplies the skin of the posterior surface of the thigh, leg, buttock, and also the perineum. Unlike most nerves termed "cutaneous" which are subcutaneous, only the terminal branches of this nerve pass into subcutaneous tissue before being distributed to the skin, with most of the nerve itself situated deep to the deep fascia. Structure Origin The posterior cutaneous nerve of the thigh is a branch of the sacral plexus. It arises from the posterior divisions of the S1- S2, and the anterior divisions of S2- S3 sacral spinal nerves. Course It leaves the pelvis through the greater sciatic foramen inferior to the piriformis muscle. It then descends deep to the gluteus maximus muscle, medial or posterior to the sciatic nerve, and alongside the inferior gluteal artery. It descends within the posterior thigh dee ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
