TRANSVERSE STABILITY OF THE CARPUS - AN ANALYTICAL STUDY
TRANSVERSE STABILITY OF THE CARPUS - AN ANALYTICAL STUDY
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DOI：
10.1002/jor.1100070516
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发表时间：
1989-09-01
影响因子：
2.8
通讯作者：
CHAO, EYS
中科院分区：
文献类型：
--
作者：
GARCIAELIAS, M;AN, KN;CHAO, EYS
利用基于刚体弹簧模型理论的分析模型，研究了腕横弓的稳定结构。该方法被用来计算模拟背掌压缩下腕骨之间的相对运动、腕间关节内的压缩力分布和韧带内的张力。通过从模型中移除韧带来确定每个韧带对压缩效果的贡献。多变量方差分析显示，单独切断屈肌支持带并不能显著改变韧带和关节的受力分布(p=0.33)，而且仅使腕背僵硬降低7.8%。相反，单独切除掌侧钩状韧带会导致腕骨结构明显变弱，平均为232~131N/mm(p<；0.01)。如果在松解一条掌侧腕间韧带的同时切除屈肌支持带，则会造成腕弓的严重不稳定。
The stabilizing structures of the transverse carpal arch were studied utilizing an analytical model based on a rigid body spring model theory. This method was used to calculate the relative motion between carpal bones, the distribution of compressive forces in the intercarpal joints, and the tensions in the ligaments under simulated dorsopalmar compression. The contribution of each ligament against the effect of compression was determined by removing ligaments from the model. A mulitvariate analysis of variance disclosed that sectioning the flexor retinaculum alone does not significantly modify the distribution of forces in ligaments and joints (p = 0.33), and decreases dorsopalmar carpal stiffness by only 7.8%. In contrast, isolated removal of the palmar hamate-capitate ligament causes a pronounced weakening of the carpal structure, from an average of 232 to 131 N/mm (p < 0.01). If the flexor retinaculum is removed in addition to releasing one palmar intercarpal ligament, a gross instability of the carpal arch is created.