Ankle Joint(redirected from talocrural articulation)
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in humans, the articulation of the bones of the shin with the foot. The tibia and fibula are part of the formation of the ankle joint; with their thickened ends (medial and lateral malleoli) embracing superiorly and laterally the ankle bone (talus) of the foot. The ankle joint is blockshaped, with one axis of rotation. It is surrounded by a capsule and is laterally attached by many tough ligaments. Its blood supply comes from the malleolar branches of the tibial and fibular arteries, which pass nearby. The ankle joint receives sensory innervation from the tibial nerve and the exterior branch of the deep peroneal nerve. Flection and extension of the foot occur at the ankle joint within a 90° radius, and they are usually combined with movements in the subtalus joint.