静态加载时肌力对膝关节稳定性的影响  

Impact of muscle strength on knee joint stability in static loading

作　　者：李凭跃[1] 尹庆水[1] 黄华扬[1] 李鉴轶[2] 沈洪园[1] 王泽锦[1] 王庆[1] 

机构地区：[1]广州军区广州总医院全军创伤骨科中心,广东广州510010 [2]南方医科大学广东省医学生物力学重点实验室,广东广州510515

出　　处：《南方医科大学学报》2010年第12期2625-2628,共4页Journal of Southern Medical University

基　　金：国家自然科学基金(30600302)~~

摘　　要：目的对ACL正常和损伤膝关节进行麻醉前后的静态加载在体稳定性检测,评价肌力对膝关节稳定性的影响。方法 8名志愿者单侧膝关节ACL断裂而对侧正常,连续硬膜外麻醉效果充分后在0°、30°、60°和90°时分别对其进行134N前加载下的在体稳定性测试,测量胫骨前移值并进行统计分析。结果 ACL正常膝关节麻醉后和麻醉前比胫骨前移在各角度间比均有显著性差异(P<0.5);麻醉后胫骨前移距离在0°时增加了1.7mm,在30°增加最明显,增加了2.7mm,60°时增加2.6mm。在90°增加了2.3mm。ACL断裂膝关节麻醉后和麻醉前比胫骨前移在各角度间比均有显著性差异(P<0.05);麻醉后胫骨前移距离在0°时增加了2.6mm,在30°增加了3.7mm,60°时增加4.3mm。在90°增加了3.5mm。结论肌力对膝关节的稳定性有明显的影响。Objective To study the in vivo stability of normal and anterior cruciate ligament （ACL）-injured knee joint before and after epidural anesthesia under 134 N pre-loading and evaluate the influence of muscular tension on the knee stability. Methods Eight volunteers with unilateral ACL rupture and normal contralateral knee were enrolled in this study. CT （3D） images and 2 orthogonal images of the knee were captured at 0°,30°,60°,and 90° under 134 N pre-loading. The orthogonal images were used to recreate the in vivo knee positions at each of the targeted flexion angles by 2D/3D registration to analyze the tibial translation data. Results The anterior tibia translation of both the intact and ACL-injured knees after anesthesia was significantly different from that before anesthesia at all the angles （P0.05）. The anterior tibial translation of the intact knee after anesthesia increased by 1.7 mm at 0° ,2.7 mm at 30°,2.6 mm at 60°,and 2.3 mm at 90°,as compare to the increase of ACL-injured knee by 4.2 mm,2.6 mm,1.2 mm,and 1.6 mm,respectively. Conclusion The muscular tension has evident influence on the knee stability in static loading.

关 键 词：稳定性测试 膝关节 稳定性 

分 类 号：R687.3[医药卫生—骨科学]