The sciatic nerve extends from the lower back to the foot and is a mixed nerve, which means it has both motor and sensory fibers. These fibers provide sensation and function in the lower limbs. The Origin and Course of the Sciatic Nerve: Tracing its Pathway

The sciatic nerve is a major nerve of the lower limb. It is a thick flat band, approximately 2cm wide – the largest nerve in the body. In this article, we shall look at the anatomy of the sciatic nerve – its anatomical course, motor and sensory functions, and its clinical correlations.

The sciatic nerve primarily supplies the muscles of the lower leg, including the calf, ankle, and the back portion of the knee. It also supplies sensation to the sole of the foot, the ankle,...

In the foot, the tibial nerve branches out into the lateral plantar nerve, medial plantar nerve, lateral dorsal cutaneous nerve, lateral calcaneal, and medial calcaneal branches, and plantar digital nerves, which supply stimulation for movement of the muscles in the foot.

The sciatic nerve is a mixed nerve that provides numerous branches for sensory and motor supply for the skin and muscles of the lower limb. Additionally, it provides articular branches for the innervation of the lower limb joints.