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詹荔琼,韩 琼,吴茂厚,倪国新.不同年龄人群行走时膝关节稳定性的研究[J].中国康复医学杂志,2018,(12):1425~1428
不同年龄人群行走时膝关节稳定性的研究    点此下载全文
詹荔琼  韩 琼  吴茂厚  倪国新
福建医科大学附属第一医院康复医学科,福州,350005
基金项目:
DOI:
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摘要:
      摘要 目的:通过对年轻人和老年人在不同速度下膝关节运动学参数进行评估,以明确两组人群在膝关节动态稳定性方面的表现与差异。 方法:运用Opti-Knee膝关节在体运动分析系统分别采集正常年轻人(n=15)及老年人(n=19)在不同步速行走时膝关节6个自由度数据(屈/伸角度、内/外旋转角度、内/外翻转角度、前/后位移、内/外位移、上/下位移),探讨两组不同速度下膝关节稳定性参数的变化情况。 结果:①与低速行走(3km/h)相比,年轻人在中速(6km/h)和高速(7km/h)行走时的膝关节屈伸角活动范围均有显著性差异(P<0.05);②老年人膝关节在高速(5km/h)行走时的内外位移明显大于低速(3km/h)行走时(P<0.05);③同样在低速(3km/h)行走时,老年人膝关节的上下位移显著大于年轻人(P<0.05)。 结论:在低速行走时,老年人相比年轻人膝关节的稳定性欠佳;随着步行速度的增加,年轻人膝关节动态稳定性无明显变化,而老年人在高速(5km/h)行走时膝关节稳定性显著下降。
关键词:速度  膝关节  在体稳定性
Dynamic assessment and comparative analysis of knee stability in young and old subjects    Download Fulltext
Department of Rehabilitation Medicine,The First Affiliated Hospital,Fujian Medical University,Fuzhou,350005
Fund Project:
Abstract:
      Abstract Objective:To collect the kinematic parameters of knee joints of young and old people,and to evaluate the knee function and in-body stability at different speeds. Method:Six degrees of freedom(DOF) of knee joints(flexion/extension, internal/external rotation, varus/valgus, anterior/posterior displacement, medial/lateral displacement, proximal/distal displacement) in normal young people (n=15) and the elderly(n=19) were collected respectively by Opti_Knee? assessment system in vivo. The gait parameters were compared under different speeds. Result:①Compared with 3km/h group, the range of flexion and extension angles of normal young people at 6km/h and 7km/h increased significantly(P<0.05).②The medial/lateral displacement of the normal elderly at 5km/h group was obviously greater than at 3km/h(P<0.05).③Under normal walking speed (3km/h), the proximal/distal displacement of the elderly was significantly larger than that of the young people(P<0.05). Conclusion:The stability of knee joint in elderly is unstable at normal walking speed (3km/h). There is no obvious change in stability of knee joint in normal young people at different speed, while the knee joint in elderly is unstable at rapid walking speed (5km/h).
Keywords:speed  knee  in vivo stability
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