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The ankle joint 

The ankle joint
Chapter:
The ankle joint
Author(s):

Richard Higgins

DOI:
10.1093/med/9780199674107.003.0042
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date: 26 November 2020

The ankle joint, or talocrural joint, is a hinged synovial joint consisting of a complex combination of articular surfaces. The stability of the joint is reliant on its position. In dorsiflexion, the talus is squeezed by the malleoli, as because of its shape it spreads the mortice, tightening the interosseous and anterior and posterior tibiofibular ligaments, securely locking the joint. This contrasts with the relative instability experienced in plantarflexion. Contributing to the adjustment to uneven surfaces and assisting in shock absorption are additional important functions of the ankle joint. During sporting activity, the lateral ankle complex is more frequently injured than any other major structure. Forces generated when landing from a jump are absorbed through the kinetic chain via the foot and ankle complex, as it progresses from plantarflexion through to dorsiflexion and pronation. Landing flat-footed would therefore transmit most of these forces proximally to other structures.

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