Abstract：
It remains unclear to what extent the interosseous membrane (IOM) is affected through the whole range of motion (ROM) in posttraumatic deformities of the forearm. The purpose of this study is to describe the ligament- and bone-related factors involved in rotational deficit of the forearm. Through three-dimensional (3D) kinematic simulations on one cadaveric forearm, angular deformities of 5° in four directions (flexion, extension, valgus, varus) were produced at two locations of the radius and the ulna (proximal and distal third). The occurrence of bone collision in pronation and the linear length variation of six parts of the IOM through the whole ROM were compared between the 32 types of forearm deformities. Similar patterns could be observed among four groups: 12 types of deformity presented increased bone collision in pronation, 8 presented an improvement of bone collision with an increase of the mean linear lengthening of the IOM in neutral rotation, 6 had an increased linear lengthening of the IOM in supination with nearly unchanged bone collision in pronation and 6 types presented nearly unchanged bone collision in pronation with a shortening of the mean linear length of IOM in supination or neutral rotation. This kinematic analysis provides a better understanding of the ligament- and bone-related factors expected to cause rotational deficit in forearm deformity and may help to refine the surgical indications of patient-specific corrective osteotomy.
摘要：
目前尚不清楚前臂创伤后畸形的整个运动范围（ROM）对骨间膜（IOM）的影响程度。这项研究的目的是描述与前臂旋转缺陷有关的韧带和骨骼相关因素。通过一个尸体前臂的三维（3D）运动学模拟，四个方向的5°角畸形(屈曲，扩展,外翻,内翻）在桡骨和尺骨的两个位置（近端和远端三分之一）产生。比较了32种类型的前臂畸形在内旋中骨碰撞的发生情况以及整个ROM中IOM的六个部分的线性长度变化。在四组中可以观察到类似的模式：12种畸形在内旋中表现出增加的骨碰撞，图8显示了随着中性旋转中IOM的平均线性延长的增加，骨骼碰撞的改善。6种类型在旋后时IOM的线性延长增加，内旋中的骨碰撞几乎不变，而6种类型在旋前中的骨碰撞几乎不变，而在旋后或中性旋转中IOM的平均线性长度缩短。这种运动学分析可以更好地了解预期会导致前臂畸形旋转缺陷的韧带和骨骼相关因素，并可能有助于完善针对患者的矫正截骨术的手术适应症。
