下胫腓联合损伤对踝关节稳定性影响的生物力学研究

发布时间：2018-04-11 09:48

本文选题：下胫腓联合 + 踝关节　；参考：《中国矫形外科杂志》2017年20期

【摘要】：[目的]探讨下胫腓联合损伤对踝关节稳定性的生物力学影响。[方法]采用6例新鲜尸体标本,制作踝关节旋前外旋损伤模型,逐步离断下胫腓联合各韧带、骨间膜和三角韧带。对标本进行600 N轴向加载,同时对踝关节施加扭矩为5 Nm的外旋力。测量下胫腓联合不同程度损伤情况下,下胫腓联合的相对位移和踝关节外旋扭转角度。[结果]随着下胫腓联合韧带和三角韧带的序贯性离断,下胫腓联合的远端腓骨相对内外位移、前后位移、腓骨转角以及踝关节扭转角度呈逐渐增加趋势。[结论]下胫腓联合韧带维持踝关节稳定。在旋转稳定性方面,下胫腓后韧带的作用最为突出。下胫腓联合韧带离断后,再离断三角韧带,踝关节的稳定性进一步丢失。
[Abstract]:[objective] to investigate the biomechanical effect of tibiofibular syndesmosis injury on ankle stability.[methods] six fresh cadavers were used to establish the ankle circumflex injury model, and the ligaments, interosseous membranes and triangular ligaments of the inferior tibiofibular syndesmosis were gradually severed.The specimen was subjected to 600 N axial loading and the external rotation force of 5 Nm was applied to the ankle joint.The relative displacement of the inferior tibiofibular syndesmosis and the angle of rotation torsion of the ankle joint were measured under different degrees of injury of the tibiofibular syndesmosis.[results] with the sequential rupture of the inferior tibiofibular syndesmosis ligament and the triangular ligament, the distal fibula of the inferior tibiofibular syndesmosis gradually increased in relative internal and external displacement, anteroposterior displacement, fibula angle and ankle torsion angle.[conclusion] the inferior tibiofibular joint ligament is stable.In terms of rotation stability, the posterior tibiofibular ligament is the most prominent.The stability of ankle joint was further lost after the rupture of the tibiofibular syndesmosis ligament and the deltoid ligament.
【作者单位】：同济大学附属同济医院骨科;复旦大学附属浦东医院骨科;上海大学理学院力学系;
【基金】：国家自然科学基金项目(编号:81501884)
【分类号】：R318.01;R684

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