In vivo three-dimensional kinematics of normal knees during different high-flexion activities.
In vivo three-dimensional kinematics of normal knees during different high-flexion activities.
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DOI：
10.1302/0301-620x.100b1.bjj-2017-0553.r2
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发表时间：
2018-01
期刊：
影响因子：
--
通讯作者：
Sugamoto K
中科院分区：
文献类型：
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作者：
Kono K;Tomita T;Futai K;Yamazaki T;Tanaka S;Yoshikawa H;Sugamoto K
在亚洲和中东，人们经常弯曲膝盖来进行日常生活活动。本研究的目的是探讨正常膝关节在高屈曲活动时的三维运动学。我们的假设是，股胫旋转，内翻-外翻角，平移，和运动路径的正常膝关节在高屈曲活动，根据活动而变化。我们研究了在体内运动学的8个正常的膝盖在4名男性志愿者（平均年龄41.8岁; 37至53），使用二维和三维注册技术，并与计算机辅助设计程序的膝盖建模。每个受试者都蹲下，跪着，盘腿坐着。我们评估了股骨相对于胫骨的旋转和内翻-外翻角以及内侧和外侧的前后平移，使用经肱骨髁轴作为股骨相对于胫骨平台垂直投影的参考。该方法从其他地方描述为伸展关节面中心的内侧评估股骨，与经典应用的方法不同。 在下蹲和跪姿时，膝关节表现为股骨外旋。当盘腿坐时，股骨显示10°至100°的内旋。从100°开始，观察到股骨外旋。内翻-外翻角度在蹲和跪之间没有显著差异，而在盘腿坐时从140°观察到内翻位置。使用我们的方法测量的运动学路径发现，在下蹲期间，内侧旋转模式从0°到40°，双髁后滚从40°到150°。在跪姿过程中，内侧枢轴模式是明显的。当盘腿坐着时，从0°到100°观察到外侧枢轴模式，超过100°观察到内侧枢轴模式。正常膝关节在高屈曲时的运动学根据活动而变化。然而，我们的研究仅限于少数男性患者，使用与先前出版物不同的技术报告运动学。因此，在概括我们的研究结果时应谨慎行事。引用这篇文章：Bone Joint J 2018;100-B：50-5。
In Asia and the Middle-East, people often flex their knees deeply in order to perform activities of daily living. The purpose of this study was to investigate the 3D kinematics of normal knees during high-flexion activities. Our hypothesis was that the femorotibial rotation, varus-valgus angle, translations, and kinematic pathway of normal knees during high-flexion activities, varied according to activity. We investigated the in vivo kinematics of eight normal knees in four male volunteers (mean age 41.8 years; 37 to 53) using 2D and 3D registration technique, and modelled the knees with a computer aided design program. Each subject squatted, kneeled, and sat cross-legged. We evaluated the femoral rotation and varus-valgus angle relative to the tibia and anteroposterior translation of the medial and lateral side, using the transepicodylar axis as our femoral reference relative to the perpendicular projection on to the tibial plateau. This method evaluates the femur medially from what has elsewhere been described as the extension facet centre, and differs from the method classically applied. During squatting and kneeling, the knees displayed femoral external rotation. When sitting cross-legged, femurs displayed internal rotation from 10° to 100°. From 100°, femoral external rotation was observed. No significant difference in varus-valgus angle was seen between squatting and kneeling, whereas a varus position was observed from 140° when sitting cross-legged. The measure kinematic pathway using our methodology found during squatting a medial pivoting pattern from 0° to 40° and bicondylar rollback from 40° to 150°. During kneeling, a medial pivot pattern was evident. When sitting cross-legged, a lateral pivot pattern was seen from 0° to 100°, and a medial pivot pattern beyond 100°. The kinematics of normal knees during high flexion are variable according to activity. Nevertheless, our study was limited to a small number of male patients using a different technique to report the kinematics than previous publications. Accordingly, caution should be observed in generalizing our findings. Cite this article: Bone Joint J 2018;100-B:50–5.