ST6-Trauma and Orthopaedics, Newcastle upon Tyne, United Kingdom.
Foot Ankle Surg. 2011 Jun;17(2):58-63. doi: 10.1016/j.fas.2011.02.002. Epub 2011 Apr 1.
The ankle is a highly congruent joint with a surface area of 11-13 cm(2). Total ankle replacements have been attempted since the early 1970s and design has continually evolved as the early designs were a failure. This was because the stresses involved and the mutiaxial motion of the ankle has not been understood until recently. It has been shown that the talus slides as well as rolls during the ankle arc of motion from plantarflexion to dorsiflexion. Furthermore, the articular surfaces and the calcaneofibular and tibiocalcaneal ligaments have been shown to form a four bar linkage dictating ankle motion. A new design ankle replacement has been suggested recently which allows multiaxial motion at the ankle while maintaining congruency throughout the arc of motion. The early results of this ankle replacement have been encouraging without any reported failures due to mechanical loosening.
踝关节是一个高度一致的关节，其表面积为 11-13cm²。自 20 世纪 70 年代初以来，人们一直在尝试进行全踝关节置换，并且由于早期设计的失败，设计也在不断发展。这是因为直到最近，人们才开始理解涉及的压力以及踝关节的多轴向运动。已经表明，在从跖屈到背屈的踝关节运动弧中，距骨不仅会滑动，还会滚动。此外，关节表面以及跟腓和距跟韧带已被证明形成了一个四杆连杆，决定了踝关节的运动。最近提出了一种新的设计的踝关节置换术，它可以在维持运动弧中一致性的同时，允许踝关节进行多轴向运动。这种踝关节置换术的早期结果令人鼓舞，没有任何因机械松动而导致的失败报告。
