摘要
[目的]测定腓骨短缩时,胫距关节的接触特性的变化,探讨腓骨短缩的最大允许程度。[方法]6具小腿标本,去除踝关节以上的皮肤、肌肉等软组织,用夹具将其固定于正常行走踝关节中立位,分别测出在正常,腓骨短缩2、4、6 mm时,胫距关节的接触压及接触面积并进行比较,观察并总结出接触压及接触面积的变化趋势。[结果]通过模拟试验发现,腓骨短缩时,胫距关节总接触面积呈减小趋势,前外、后外象限的接触面积、接触压呈增大趋势,而前内,后内象限的接触面积、接触压均减小。[结论]2 mm以上(包含2 mm)的腓骨短缩,均会造成胫距关节接触特性的显著改变。
[ Objective] To evaluate the effect of fibula shortening on biomechanical characters of tibiotalar joint and prescribe the most acceptable extent of fibula shortening. [ Method ] Six fresh eadaverie specimens were disartieulated though the knee,and the soft tissues were removed from the knee to the level of the ankle joint. The position of the ankle joint during testing simulated the single leg stance phase of gait. Every group of specimen carried out a biomeehanieal test in the turn of intact, fibula 2mm shortening, 4mm shortening, 6mm shortening. The biomechanical change of the tibiotalar joint after fibular shortening was found. [Result]The total contact area of the tibiotalar joint tended to decrease in the fibular shortening model. The contact area and contact pressure in anteromedial and posteromedial quadrant tended to decrease, while, the contact area and contact pressure in anterolateral and posterolateral quadrant tended to increase. [ Conclusion ] The 2 mm fibular shortening （including 2 ram） significantly alter the biorneehanieal characters in tibiotalar joint.
出处
《中国矫形外科杂志》
CAS
CSCD
北大核心
2007年第2期134-136,共3页
Orthopedic Journal of China
关键词
腓骨短缩
胫距关节
压敏片
生物力学
踝关节
shortened fibula
tibiotalar joint
pressure sensitive film
biomechanies
ankle joint
