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Tibialis Anterior



The ankle joint consists of three bones: the tibia, the fibula, and the talus. The ankle ( talocrural joint), is a synovial hinge joint.

Three separate ligaments stabilize the lateral aspect of the ankle joint: the anterior talofibular, calcaneofibular and posterior talofibular ligaments. Medially, support comes from a collective group of ligaments known as the deltoid ligament.

Major Motions of the Ankle Joint



Pronation/Supination. In simple terms, pronation occurs when the plantar side of the foot moves toward the floor surface in weight bearing, and supination occurs when the plantar side moves away from the floor surface. Pronation involves abduction, eversion and some dorsiflexion, whereas supination involves adduction, inversion and plantar flexion.

The most common ankle problems are sprains and fractures. A sprain is an injury to the ligaments.


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