Tibiofemoral kinematics and condylar motion during the stance phase of gait.
Tibiofemoral kinematics and condylar motion during the stance phase of gait.
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DOI：
10.1016/j.jbiomech.2009.05.003
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发表时间：
2009-08-25
影响因子：
2.4
通讯作者：
Li, Guoan
中科院分区：
文献类型：
--
作者：
Kozanek, Michal;Hosseini, Ali;Liu, Fang;Van de Velde, Samuel K.;Gill, Thomas J.;Rubash, Harry E.;Li, Guoan
准确了解膝关节在体的动态运动有助于了解膝关节的正常和病理功能。然而，解释运动的膝关节步态在其他的矢状面仍然存在争议。在这项研究中，我们利用双透视成像技术，研究了六个自由度的运动学和髁状突运动的膝盖在跑步机步态的立场相在8名健康志愿者在0.67米/秒的速度。我们假设步态期间测量的6自由度膝关节运动学将不同于非负重活动报告的运动学，尤其是股骨后滚现象。此外，我们假设在跑步机步态的站立阶段，股骨内侧髁在横向平面中的运动大于股骨外侧髁。股骨相对于胫骨的旋转运动和前后平移与站立阶段膝关节的屈曲-伸展路径有明确的关系。此外，我们观察到股骨回滚现象发生逆转，股骨在伸展时向后移动，在屈曲时向前移动。此外，我们注意到，在步态的站立阶段，股骨内侧髁在横向平面中的运动大于股骨外侧髁（分别为17.4±2.0 mm vs. 7.4±6.1 mm; p<0.01）。这一趋势与先前研究中在非负重屈曲或单腿弓步中观察到的相反。这些数据提供了基线知识的正常生理的理解和分析的病理功能的膝关节在行走。这些研究结果进一步表明，膝关节运动学是活动依赖性的，一种活动（非负重屈曲或弓步）的运动模式不能概括为解释不同的活动（步态）。
Accurate knowledge of the dynamic knee motion in vivo is instrumental for understanding normal and pathological function of the knee joint. However, interpreting motion of the knee joint during gait in other than the sagittal plane remains controversial. In this study, we utilized the dual fluoroscopic imaging technique to investigate the six-degree of freedom kinematics and condylar motion of the knee during the stance phase of treadmill gait in eight healthy volunteers at a speed of 0.67m/sec. We hypothesized that the 6DOF knee kinematics measured during gait will be different from those reported for non-weightbearing activities, especially with regards to the phenomenon of femoral rollback. In addition, we hypothesized that motion of the medial femoral condyle in the transverse plane is greater than that of the lateral femoral condyle during the stance phase of treadmill gait. The rotational motion and the anterior-posterior translation of the femur with respect to the tibia showed a clear relationship with the flexion-extension path of the knee during the stance phase. Additionally, we observed that the phenomenon of femoral rollback was reversed, with the femur noted to move posteriorly with extension and anteriorly with flexion. Furthermore, we noted that motion of the medial femoral condyle in the transverse plane was greater than that of the lateral femoral condyle during the stance phase of gait (17.4±2.0 mm vs. 7.4±6.1 mm, respectively; p<0.01). The trend was opposite to what has been observed during non-weightbearing flexion or single-leg lunge in previous studies. These data provide baseline knowledge for the understanding of normal physiology and for the analysis of pathological function of the knee joint during walking. These findings further demonstrate that knee kinematics is activity-dependent and motion patterns of one activity (non-weightbearing flexion or lunge) cannot be generalized to interpret a different one (gait).
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影响因子：
2.4
作者：
BLANKEVOORT, L;KUIPER, JH;GROOTENBOER, HJ
通讯作者：
GROOTENBOER, HJ
影响因子：
2.4
作者：
LAFORTUNE, MA;CAVANAGH, PR;KALENAK, A
通讯作者：
KALENAK, A
DOI：
10.1115/1.2795970
发表时间：
1996-05-01
影响因子：
1.7
作者：
Li, XM;Liu, B;Zhang, SM
通讯作者：
Zhang, SM
影响因子：
3.3
作者：
Lee, Song Joo;Hidler, Joseph
通讯作者：
Hidler, Joseph
影响因子：
5.5
作者：
Borghese, NA;Bianchi, L;Lacquaniti, F
通讯作者：
Lacquaniti, F