膝骨关节炎患者股内侧肌、股直肌和股外侧肌间的协调性  

Coordination of Vastus Medialis,Rectus Femoris and Vastus Lateralis in Patients with Knee Osteoarthritis

作　　者：师东良[1] 王宁华[1] 谢斌[1] 

机构地区：[1]北京大学第一医院物理医学与康复科,北京市100034

出　　处：《中国康复理论与实践》2010年第5期473-477,共5页Chinese Journal of Rehabilitation Theory and Practice

基　　金：北京市科委重大项目(D08050700330000)

摘　　要：目的应用表面肌电图和等速肌力测定方法比较膝骨关节炎患者与正常人股内侧肌、股直肌和股外侧肌间的协调性改变。方法 34例膝骨关节炎患者和34名膝关节健康者在膝关节屈曲10°、60°、100°等长伸膝和等速60°/s、180°/s伸膝运动测试模式下,进行股内侧肌(VM)、股直肌(RF)和股外侧肌(VL)的表面肌电图和股四头肌肌力的评测,包括肌肉激活启动顺序和VM/VL神经肌电比值。结果与正常人对比,膝骨关节炎患者在等速180°/s伸膝运动时VM相对于VL启动延迟(P<0.05);在膝屈10°等长伸膝运动时,VM/VL神经肌电比值降低(P<0.05)。结论膝骨关节炎患者患侧股四头肌的协调性减退。Objective To compare the coordination characteristic of the vastus medialis （VM）,rectus femoris （RF） and vastus lateralis （VL） between patients with knee osteoarthritis and healthy subjects.Methods 34 patients with knee osteoarthritis and 34 controls with normal knee were tested in isometric knee extension at knee joint angles of 10°,60°,100° flexion and isokinetic knee extension at velocities of 60°/s and 180°/s.Surface electromyogram （EMG） was recorded in the VM,RF and VL.The activation sequence of muscles and VM/VL EMG ratio were analyzed.Results The VM started significantly later than the VL in isokinetic contraction at 180°/s in patients compared with the controls （P0.05）,and the VM/VL EMG ratio decreased in isometric contraction with knee extension at 10° （P0.05）.Conclusion The coordination of the vastus medialis,rectus femoris and vastus lateralis decreases in the knee osteoarthritis patients.

关 键 词：膝骨关节炎 股四头肌 表面肌电图 肌力 

分 类 号：R684.3[医药卫生—骨科学]