INFLUENCE OF JOINT LAXITY ON SCAPHOID KINEMATICS
INFLUENCE OF JOINT LAXITY ON SCAPHOID KINEMATICS
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DOI：
10.1016/s0266-7681(05)80097-x
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发表时间：
1995-06-01
期刊：
影响因子：
--
通讯作者：
CASAS, J
中科院分区：
文献类型：
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作者：
GARCIAELIAS, M;RIBE, M;CASAS, J
与正常关节相比，过度松弛的腕关节在负荷过重或受伤时更容易出现症状，这是生物学或机械学因素的结果还是两者兼而有之尚不清楚。本研究评估了60名正常志愿者在桡尺偏腕关节时关节松弛程度与舟状骨运动学行为之间的关系。腕舟骨旋转方向与腕关节松弛度呈显著的线性关系。在腕关节的外偏过程中，更松弛的关节具有主要沿着屈曲和伸展的矢状面旋转的舟状骨，具有很少的外偏。相反，松弛度降低的志愿者的舟状骨大多数沿着桡尺偏斜的额面旋转，具有最小的屈曲伸展。这些结果支持舟状骨平面外旋转增加是过度工作或受伤时脆弱性增加的一个因素的概念。
Excessively lax wrists more frequently become symptomatic if overloaded or injured than normal joints, Whether this is the consequence of biological or mechanical factors or both remains unknown, This study evaluates the relationship between the degree of joint laxity and scaphoid kinematic behaviour during radio-ulnar deviation of the wrist in 60 normal volunteers, There is a significant linear relationship between the direction of scaphoid rotation and the amount of wrist joint laxity. During lateral deviation of the wrist, joints that are more lax have a scaphoid rotating mainly along the sagittal plane of flexion and extension, with little lateral deviation. In contrast, the scaphoid of volunteers with decreased laxity rotate mostly along the frontal plane of radioulnar deviation with minimal flexion extension, These results support the concept of increased out-of-plane scaphoid rotation as a factor of increased vulnerability during over-work or injury.