Tibialis
Tibialis
Tibialis (pronunciation: ti-bi-al-is) is a term used in anatomy to refer to two muscles in the leg. These muscles are the Tibialis Anterior and the Tibialis Posterior. The term "tibialis" is derived from the Latin word "tibia", which means "shinbone" or "inner bone of the leg".
Tibialis Anterior
The Tibialis Anterior (pronunciation: ti-bi-al-is an-te-ri-or) is a muscle that originates from the upper two-thirds of the lateral (outer) surface of the tibia and inserts into the medial cuneiform and first metatarsal bones of the foot. It functions to dorsiflex and invert the foot.
Tibialis Posterior
The Tibialis Posterior (pronunciation: ti-bi-al-is pos-te-ri-or) originates from the posterior surface of the tibia and fibula, and the interosseous membrane. It inserts into the foot at multiple points, and functions to plantarflex and invert the foot.
Related Terms
- Dorsiflexion: The action of raising the foot upwards towards the shin.
- Plantarflexion: The action of moving the foot downwards away from the shin.
- Inversion: The action of turning the sole of the foot inwards.
- Cuneiform Bones: A group of three bones in the human foot, located between the tarsal bones and the metatarsal bones.
- Metatarsal Bones: A group of five long bones in the foot, located between the tarsal bones and the phalanges of the toes.
External links
- Medical encyclopedia article on Tibialis
- Wikipedia's article - Tibialis
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