Universitätsklinikum Heidelberg, Centre of Orthopedics and Trauma Surgery, Heidelberg, Germany.
Universitätsklinikum Heidelberg, Centre of Orthopedics and Trauma Surgery, Heidelberg, Germany.
Gait Posture. 2020 Mar;77:95-99. doi: 10.1016/j.gaitpost.2020.01.016. Epub 2020 Jan 21.
Despite of many attempts to determine or correct hip and knee joint parameters via non-invasive techniques such as regression or functional methods, in conventional gait models the position of the ankle joint center still is assumed at the center point between malleoli.
The aim of this study was to estimate the ankle joint parameters using a functional approach.
To this aim, we used data of 23 typically developed adults performing two different calibration motions. Subsequently, we applied functional approaches to determine the functional joint center and axis.
The results show significant differences for ankle joint parameters in all directions for both calibration motions applied with respect to the malleoli line. Most prominently, we find a shift of the ankle joint center of 7 % of the foot length anteriorly to the malleoli mid-point when applying functional calibration.
These significant alterations of the ankle joint center and axis indicate the importance of accurate determination of ankle joint parameters and consequently their influence on the clinical outcome.
尽管已经尝试通过回归或功能等非侵入性技术来确定或纠正髋关节和膝关节参数，但在传统步态模型中，踝关节中心的位置仍假设在内外踝的中心点。
本研究旨在使用功能方法来估计踝关节参数。
为此，我们使用了 23 名正常发育的成年人在执行两种不同校准运动时的数据。然后，我们应用功能方法来确定功能关节中心和轴。
结果表明，与内外踝线相比，两种校准运动在所有方向上的踝关节参数均存在显著差异。最显著的是，当应用功能校准时，我们发现踝关节中心从前到内外踝中点向前移动了 7%的足长。
这些踝关节中心和轴的显著变化表明准确确定踝关节参数及其对临床结果的影响的重要性。
