Sciatic nerve innervates which muscles

The division of the sciatic nerve into the common peroneal and tibial nerves may take place at any point between the sacral plexus and the lower third of the thigh. When it occurs at the sacral plexus, the common peroneal nerve usually pierces the piriformis muscle. Pain and functional symptoms may be caused by a compression or irritation of the sciatic nerve. This may be caused by:. Anatomy: Abdominopelvic. Please Note: You can also scroll through stacks with your mouse wheel or the keyboard arrow keys.

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Citation, DOI and article data. Jones, J. Sciatic nerve. Reference article, Radiopaedia. URL of Article. On this page:. Standring S editor. Gray's Anatomy 39th edition.

Churchill Livingstone. Read it at Google Books - Find it at Amazon 2. Movements include turning the foot inward inversion , outward eversion , upward dorsifelxion , and downward plantarflexion.

If the sciatic nerve is impaired in any way, the affected portion of the nerve root or sciatic nerve determines which motor functions are affected. The sciatic nerve provides sensation to different areas of skin dermatome over the lower limb s. Similar to the motor symptoms, sensory impairments are also determined by the location of sciatic nerve involvement.

The sensory symptoms of sciatic nerve impairment may be described as a sensation of hot water running down the thigh, foot sitting in a bucket of ice, or inability to lift the leg or foot due to a feeling of heaviness. The lengthy course of the sciatic nerve in the lower limbs helps provide several motor and sensory functions. The complex anatomical features of this nerve in the lower back and pelvis predisposes it to trauma.

You are here Conditions Spine Anatomy. Peer Reviewed. Watch Sciatic Nerve Anatomy Video. Katirji B, Wilbourn AJ. Mononeuropathies of the Lower Limb. In: Peripheral Neuropathy. Elsevier; Kaufmann P. Tibial Nerve. In: Encyclopedia of the Neurological Sciences.