Hetherington V J, Carnett J, Patterson B A
University of Osteopathic Medicine and Surgery, College of Podiatric Medicine and Surgery, Des Moines, Iowa.
J Foot Surg. 1989 Jan-Feb;28(1):13-9.
The analysis of motion of the first metatarsophalangeal joint in this study demonstrates the character of motion about this joint. Four instantaneous centers of rotation were calculated in the first metatarsal head that formed an arc encircling an area of increased stress patterns. The joint motion is made up of rolling, sliding, and compression. The fact that there is more than one center of motion contradicts the theory of a simple hinge joint. The joint is a dynamic acetabulum or "hammock," as described by Kelikian. That is, the first metatarsal head moves within a stable support comprised of the base of the proximal phalanx, the sesamoids, soft tissue, and muscle tendons. The nature of first metatarsophalangeal joint motion must be considered when contemplating surgical procedures of the first metatarsophalangeal joint.
本研究中对第一跖趾关节运动的分析揭示了该关节的运动特征。在第一跖骨头中计算出四个瞬时旋转中心，它们形成了一个环绕应力模式增加区域的弧线。关节运动由滚动、滑动和压缩组成。存在多个运动中心这一事实与简单铰链关节理论相矛盾。该关节是一个动态髋臼或如凯利肯所描述的“吊床”。也就是说，第一跖骨头在由近节趾骨基部、籽骨、软组织和肌腱组成的稳定支撑内移动。在考虑第一跖趾关节的外科手术时，必须考虑第一跖趾关节运动的性质。
