腕关节融合术中使用的三种固定装置即时稳定性的力学比较：一项尸体研究

A mechanical comparison of the immediate stability of three fixation devices used in wrist arthrodesis: a cadaveric study.

作者信息

Morelli M, Harris P G, Fowles J V, Boudreault F, El-Maach I, Yahia L

机构信息

Department of Surgery, Centre Hospitalier de l'Université de Montréal, Montreal, Quebec, Canada.

出版信息

J Hand Surg Am. 1999 Jul;24(4):828-34. doi: 10.1053/jhsu.1999.0828.

DOI:10.1053/jhsu.1999.0828

PMID:10447176

Abstract

This study was designed to determine which of 3 fixation devices used in wrist arthrodesis provides the greatest immediate stability along 2 axes of movement. Twenty cadaver wrists were mechanically tested. Group 1 consisted of 7 wrists stabilized using a 2.3-mm Steinmann pin. Six wrists from the second group were immobilized with a 9-hole, 3.5-mm AO dynamic compression plate. The third group consisted of 7 wrists stabilized with an 8-hole, short-bend, precontoured low-contact dynamic compression plate. Stiffness and fracture force were determined in both forced flexion and forced pronation. The results showed that the Steinmann pin was the least stable of the 3 constructs in both axes of movement. No differences were observed between the 2 compression plates for either of the 2 axes of movement.

摘要

本研究旨在确定腕关节融合术中使用的三种固定装置中哪一种能在两个运动轴向上提供最大的即时稳定性。对20个尸体手腕进行了力学测试。第一组由7个使用2.3毫米斯氏针固定的手腕组成。第二组的6个手腕用9孔、3.5毫米AO动力加压钢板固定。第三组由7个用8孔、短弯、预塑形低接触动力加压钢板固定的手腕组成。在强制屈曲和强制旋前时测定刚度和骨折力。结果表明，在两个运动轴向上，斯氏针是三种固定结构中稳定性最差的。在两个运动轴向上，两种加压钢板之间均未观察到差异。