Clunial Nerves (other)
The cluneal nerves (or clunial nerves) are cutaneous nerves of the buttocks. They are often classified according to where on the buttocks they innervate. Specifically, the nerves are as follows: * Superior cluneal nerves * Medial cluneal nerves * Inferior cluneal nerves The inferior clunial nerves (also called gluteal branches of posterior femoral cutaneous nerve) innervate the skin of the lower part of the buttocks The buttocks (singular: buttock) are two rounded portions of the exterior anatomy of most m ...

Cutaneous Nerve
A cutaneous nerve is a nerve that provides nerve supply to the skin. Human anatomy In human anatomy, cutaneous nerves are primarily responsible for providing sensory innervation to the skin. In addition to sympathetic and autonomic afferent (sensory) fibers, most cutaneous nerves also contain sympathetic efferent (visceromotor) fibers, which innervate cutaneous blood vessels, sweat glands, and the arrector pilli muscles of hair follicles. These structures are important to the sympathetic nervous response. There are many cutaneous nerves in the human body, only some of which are named. Some of the larger cutaneous nerves are as follows: Upper body * In the arm (proper) ** Superior lateral cutaneous nerve of arm (Superior LCNOA) ** Inferior lateral cutaneous nerve of arm (Inferior LCNOA) ** Posterior cutaneous nerve of arm (PCNOA) ** Medial cutaneous nerve of arm (MCNOA) * In the forearm ** Lateral cutaneous nerve of forearm (LCNOF) ** Posterior cutaneous nerve of forearm (PCNOF ...
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Buttocks
The buttocks (singular: buttock) are two rounded portions of the exterior anatomy of most mammals, located on the posterior of the pelvic region. In humans, the buttocks are located between the lower back and the perineum. They are composed of a layer of exterior skin and underlying subcutaneous fat superimposed on a left and right gluteus maximus and gluteus medius muscles. The two gluteus maximus muscles are the largest muscles in the human body. They are responsible for movements such as straightening the body into the upright (standing) posture when it is bent at the waist; maintaining the body in the upright posture by keeping the hip joints extended; and propelling the body forward via further leg (hip) extension when walking or running. In the seated position, the buttocks bear the weight of the upper body and take that weight off the feet. In many cultures, the buttocks play a role in sexual attraction. Many cultures have also used the buttocks as a primary target f ...
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Superior Cluneal Nerves
The superior cluneal nerves are pure sensory nerves that innervate the skin of the upper part of the buttocks. They are the terminal ends of the L1-L3 spinal nerve dorsal rami lateral branches.Waldman SD. Atlas of Uncommon Pain Syndromes. 3rd ed. Philadelphia, PA: Saunders/Elsevier; 2014. They are one of three different types of cluneal nerves (middle and inferior cluneal nerves being the other two). Dysfunction of the superior cluneal nerves is often due to entrapment as the nerves cross the iliac crest – this can result in numbness, tingling or pain in the low back and upper buttocks region. Superior cluneal nerve dysfunction is a clinical diagnosis that can be supported by diagnostic nerve blocks. Anatomy The superior cluneal nerves are a group of nerves that were first described by Maigne et al. in 1989 as a source of low back pain. These nerves are grouped as the superior cluneal nerves due to their trajectory over the iliac spine, as opposed to the lateral, medial and inf ...
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Medial Cluneal Nerves
The medial clunial nerves innervate the skin of the buttocks closest to the midline of the body. Those nerves arise from the posterior rami of sacral spinal nerves A spinal nerve is a mixed nerve, which carries motor, sensory, and autonomic signals between the spinal cord and the body. In the human body there are 31 pairs of spinal nerves, one on each side of the vertebral column. These are grouped into the ... (S1, S2, and S3). Additional images Image:Gray801.png, Diagram of the distribution of the cutaneous branches of the posterior divisions of the spinal nerves. Image:Gray803.png, The posterior divisions of the sacral nerves. External links * * - "Superficial Anatomy of the Lower Extremity: Cutaneous Nerves of the Posterior Aspect of the Lower Extremity" Spinal nerves Buttocks {{neuroanatomy-stub ...
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