In addition, gastrocnemius, soleus and the tendon of plantaris are superficial to tibialis posterior. The belly of the muscle is overlapped by the flexor hallucis longus and flexor digitorum longus muscles. The latter separates tibialis posterior from the anterior leg muscles. It is located posterior to the tibia, fibula and interosseous membrane of leg. Tibialis posterior is the deepest and most central muscle in the posterior compartment of leg. Cement your knowledge and improve retention efficiently using Kenhub's muscle anatomy and reference charts! Relations
The deeper, and smaller division, inserts onto the middle and lateral cuneiform bones, the cuboid boneand the bases of the second, third and fourth metatarsal bones.Ĭontinuously re-reading and looking at your atlas won't help you remember the origins and insertions. The superficial, and larger division, inserts onto the plantar surface of the tarsal bones of the foot, mainly onto the tuberosity of navicular boneand the medial cuneiform bone. Here, the tendon of tibialis posterior divides into two divisions superficial and lateral.
It continues into the medial part of the foot by passing through the tarsal tunnel, deep to the flexor retinaculum of ankle. At the ankle, the tendon of tibialis posterior passes posteriorly to the medial malleolus of the tibia. The two parts become one muscle, which travels towards the foot. The lateral part originates from the upper two-thirds of the posterior surface of fibula. The medial portion arises from the upper two-thirds of the posterior surface of tibia, inferior to the soleal line, and from the posterior surface of interosseous membrane of leg. The muscle consists of two parts close to its origin medial and lateral. Tibialis posterior is attached between the bones of the leg and the foot. This article will discuss the anatomy and function of the tibialis posterior (tib post) muscle. Supports medial longitudinal arch of foot Tuberosity of navicular bone, all cuneiform bones, cuboid bone, bases of metatarsal bones 2-4 Posterior surface of tibia, posterior surface of fibula and interosseous membrane Key facts about the tibialis posterior muscle Origin It is also a synergist of tibialis anterior in inversion of the foot. As a result, it helps with plantar flexion of the foot at the ankle joint. This muscle crosses the ankle joint to insert on the plantar surface of the foot. Tibialis posterior is hidden from view by the large, superficial muscles of the leg gastrocnemius and soleus. These muscles are located posterior to the tibia, fibula and interosseous membrane. Together with popliteus, flexor hallucis longus and flexor digitorum longus, it forms the deep group of muscles of the posterior compartment of leg. Tibialis posterior is the most central and deepest muscle located in the posterior aspect of the leg. Tibialis posterior muscle (musculus tibialis posterior)