Anatomy Of The Sciatic Nerve

The sciatic nerve innervates many of the posterior muscles of the thighs directly and innervates the muscles of the lower legs and feet indirectly through its branches. In this article we shall look at the anatomy of the sciatic nerve its anatomical course motor and sensory functions and its clinical correlations.

Sciatic Nerve An Overview Sciencedirect Topics

Branches of the tibial branch of the sciatic nerve stimulate muscles in the lower leg including the.

Anatomy of the sciatic nerve. It is a thick flat band approximately 2cm wide the largest nerve in the body. Lateral and medial gastrocnemius. The nerve supplies the posterior compartment of the thigh the leg and foot.

The sciatic nerve is the dominant nerve that innervates the lower back and the lower extremities. Sciatic nerve largest and thickest nerve of the human body that is the principal continuation of all the roots of the sacral plexus. The sciatic nerve is a major nerve of the lower limb.

It connects the spinal cord with the outside of the thigh the hamstring muscles in the back of the thighs and muscles in the lower leg and feet. As such when the sciatic nerve is impaired it can lead to muscle weakness andor. The sciatic nerve primarily supplies the muscles of the lower leg including the calf ankle and the back portion of the knee.

It is the longest and widest nerve in the human body. The sciatic nerve supplies sensation and strength to the leg as well as the reflexes of the leg. The sciatic nerve is a large bilateral fiber formed from the anterior and posterior divisions of nerve roots l4 l5 s1 s2 and s3.

Above the back of the knee it divides into the tibial and. Sensory neurons carrying signals from the skin of the hip and thigh also run through the sciatic nerve toward the spinal cord. It is the largest branch of the lumbosacral plexus.

It travels from the lower spine through the pelvis and down each leg. It emerges from the spinal cord in the lumbar portion of the spine and runs down through the buttocks and the back of the thigh.

Sciatic Nerve L4 L5 S1 S2 S3 And Posterior Femoral