APPLIED RADIOLOGICAL ANATOMY

Detailed explanation-1: -The tibial nerve originates from the L4-S3 spinal nerve roots and provides motor and sensory innervation to most of the posterior leg and foot. In addition to its motor branches, the branches of the tibial nerve include the medial sural cutaneous nerve, medial calcaneal nerve, and the medial and lateral plantar nerves.

Detailed explanation-2: -Just before reaching the popliteal fossa, it divides into 2 important branches. One branch is the tibial nerve, which continues to descend in the posterior compartment of leg and foot. The other branch is the common peroneal nerve, which travels down the lateral and anterior compartment of the leg and foot.

Detailed explanation-3: -The tibial nerve arises from the sciatic nerve just proximal to the knee. It descends to the level of the medial malleolus from where it travels under the flexor retinaculum at the medial side of the ankle. The distal tibial nerve then divides into four terminal branches.