The tibialis posterior is one of the muscles of the deep group within the posterior compartment of the leg.
The leg is comprised of anterior, lateral and posterior compartments. The posterior (flexor) compartment consists of two groups of muscles: a superficial group and a deep group, which are separated by a deep fascial layer.
Muscles of the superficial group within the posterior compartment of the leg
Muscles of the deep group within the posterior compartment of the leg
- Posterior surfaces of interosseous membrane and adjacent surfaces of the tibia and fibula
- Tuberosity of navicular and adjacent region of medial cuneiform
- Inversion and plantarflexion of foot
- Support of medial arch of foot during walking
- Tibial nerve: L4,L5
- Posterior tibial artery