Tibialis posterior
Tibialis Posterior
The Tibialis Posterior (pronounced: ti-BEE-lee-us pos-TEER-ee-or) is one of the most central muscles in the leg and foot.
Etymology
The term "Tibialis Posterior" is derived from Latin, where "tibia" means "shin", and "posterior" means "behind". Thus, the term refers to the muscle located behind the shin bone.
Anatomy
The Tibialis Posterior originates from the posterior surface of the tibia and fibula, and the interosseous membrane. It descends into the foot and attaches to the bones of the foot (navicular and medial cuneiform bones).
Function
The primary function of the Tibialis Posterior is to stabilize the foot and prevent it from collapsing. It also assists in inversion and plantar flexion of the foot.
Related Terms
- Tibia: The larger and stronger of the two bones in the leg below the knee, and it connects the knee with the ankle bones.
- Fibula: The smaller of the two bones in the lower leg, it runs parallel to the tibia.
- Inversion: The movement of the sole towards the median plane.
- Plantar Flexion: The movement of the foot that flexes the foot or toes downward toward the sole.
Pathology
Dysfunction or injury to the Tibialis Posterior can lead to conditions such as flat foot or posterior tibial tendon dysfunction (PTTD).
See Also
External links
- Medical encyclopedia article on Tibialis posterior
- Wikipedia's article - Tibialis posterior
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