Tibialis posterior

Origin	Tibia, Fibula
Insertion	Navicular, medial cuneiform
Action(s)	Inversion of the foot, plantar flexion of the foot at the ankle
Nerve Supply	Tibial nerve
Arterial Supply	Posterior tibial artery
Physical Exam	Enter physical examination maneuvers for muscle
Clinical Importance	Enter clinical importance of muscle
Disease States	Enter links to pages where muscle involved
Discussion	Function: As well as being a key muscle/tendon for stabilization, the tibialis posterior muscle also contracts to produce inversion of the foot and assists in the plantar flexion of the foot at the ankle. Tibialis posterior also has a major role in supporting the medial arch of the foot and therefore dysfunction can lead to flat feet in adults (as well as unopposed eversion as inversion is lost, leading to a valgus deformity).