In vivo motion of the scaphotrapezio-trapezoidal (STT) joint.
In vivo motion of the scaphotrapezio-trapezoidal (STT) joint.
复制标题
舟骨梯形（STT）关节的体内运动。
DOI：
10.1016/j.jbiomech.2003.09.033
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发表时间：
2004
影响因子：
2.4
通讯作者：
Akelman,E
中科院分区：
文献类型：
--
作者：
Sonenblum,SE;Crisco,JJ;Kang,L;Akelman,E
先前已经表明，舟骨-梯形（STT）关节的关节可以建模，使得梯形和舟骨紧密连接，并在腕关节运动的所有方向上相对于舟骨在单个路径上一起移动。这种模型的简单性是迷人的，但它没有回答为什么两个不同的腕骨会有一个相互铰接的表面，如果它们之间没有运动，以及如何将这种简单的STT关节运动模型转化为更复杂的整体腕骨运动。我们使用无标记骨配准技术对10名受试者（20个手腕）的腰椎和腰椎进行了体内分析。特别是，我们分析了质心间距，质心位移，运动学，和姿态的小梯形和骨相对于舟状骨。我们发现，在总体水平上，体内STT运动与体外报告一致。此外，我们发现，梯形和梯形运动的大小是依赖于手腕运动的方向。然而，我们还发现，当考虑小旋转和位移时，小斜方肌和尺骨之间存在小但统计学显著的相对运动（最大屈曲0.4mm，桡侧偏斜0.3mm，屈曲伸展和尺侧偏斜至少10°）以及轻微的偏离路径旋转。本研究的结果表明，STT关节应被视为一个移动的关节，其运动比以前认识到的更复杂。
It has previously been shown that the articulation of the scaphotrapezio–trapezoidal (STT) joint can be modeled such that the trapezoid and trapezium are tightly linked and move together on a single path relative to the scaphoid during all directions of wrist motion. The simplicity of such a model is fascinating, but it leaves unanswered why two distinct carpal bones would have a mutually articulating surface if there were no motion between them, and how such a simplistic model of STT joint motion translates into the more complex global carpal motion. We performed an in vivo analysis of the trapezoids and trapeziums of 10 subjects (20 wrists) using a markerless bone registration technique. In particular, we analyzed the centroid spacing, centroid displacements, kinematics, and postures of the trapezoid and trapezium relative to the scaphoid. We found that, on a gross level, the in vivo STT motion was consistent with that reported in vitro. In addition, we found that the magnitude of trapezoid and trapezium motion was dependent upon the direction of wrist motion. However, we also found that when small rotations and displacements are considered there were small but statistically significant relative motions between the trapezoid and trapezium (0.4mm in maximum flexion, 0.3mm in radial deviation and at least 10° in flexion extension and ulnar deviation) as well as slight off-path rotations. The results of this study indicate that the STT joint should be considered a mobile joint with motions more complex than previously appreciated.
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影响因子：
1.9
作者：
Moritomo, H;Viegas, SF;Patterson, RM
通讯作者：
Patterson, RM
影响因子：
4.2
作者：
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A. Flatt
影响因子：
4.2
作者：
J. Kauer
通讯作者：
J. Kauer
影响因子：
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作者：
Moritomo, H;Viegas, SF;Patterson, RM
通讯作者：
Patterson, RM