tibialis posterior
Part of Posterior leg
| Cause of shin splints! Test by inversion against resistance |
|
|---|---|
| Action | inversion and plantarflexion of foot |
| Origin | posterior surface of interosseous membrane, the posterior aspect of the tibia inferior to the soleal line, and the posterior surface of the fibula |
| Insertion | tuberosity of the navicular bone; the plantar surfaces of the cuboid and cuneiform bones; and the bases of the 2nd, 3rd, and 4th metatarsals |
| Innervation | Tibial nerve |
Lies in the 4th layer of the sole.
Tendon supports the medial longitudinal arch.