Muscle Anatomy

Tibialis Posterior

The tibialis posterior is a sizable, deep muscle located in the posterior compartment of the lower leg, forming part of the calf.

Interosseous membrane, posterior surfaces of the tibia and fibula.

Navicular and medial cuneiform bones, as well as the bases of the second, third, and fourth metatarsal bones.

Primarily responsible for plantarflexion and inversion of the foot, providing essential support to the medial arch and contributing to overall foot stability during weight-bearing activities.