Tibial Nerve
From WikiMSK
Tibial Nerve | |
---|---|
Nerve Type | Mixed nerve |
Origin | One of the two branches of the sciatic nerve in the lower third of the thigh. L4-S3. |
Course | Through popliteal fossa, deep to gastrocnemius, and under the flexor retinaculum of the ankle. |
Major Branches | Sural Nerve, Medial Plantar Nerve, Lateral Plantar Nerve, Medial Calcaneal Nerve |
Sensory innervation | Articular branches to the joints of the knee, ankle, and foot. Cutaneous branches to the posterior calf and sole of the foot. |
Motor innervation | Posterior Compartment of the Thigh, Posterior Compartment of the Leg, muscles of the sole of the foot |
Lesion Effect
A high lesion of the tibial nerve results in
- Loss of flexion of the toes and inversion of the foot.
- Loss of sensation of the sole of the foot, inferior aspect of the toes, and nail beds