KNEE KINEMATICS AND KINETICS DURING LOCOMOTOR ACTIVITIES OF DAILY LIVING IN SUBJECTS WITH KNEE ARTHROPLASTY AND IN HEALTHY CONTROL SUBJECTS
KNEE KINEMATICS AND KINETICS DURING LOCOMOTOR ACTIVITIES OF DAILY LIVING IN SUBJECTS WITH KNEE ARTHROPLASTY AND IN HEALTHY CONTROL SUBJECTS
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DOI：
10.1093/ptj/73.4.229
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发表时间：
1993-04-01
期刊：
影响因子：
3.2
通讯作者：
KREBS, DE
中科院分区：
文献类型：
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作者：
JEVSEVAR, DS;RILEY, PO;KREBS, DE
背景和目的。尚未对同一受试者（无论是健康对照受试者还是膝关节损伤受试者）在步态、楼梯谈判和从椅子上起身过程中的膝关节运动学和动力学进行定量研究。尽管数据很少，康复目标通常包括在特定的固定角速度下实现特定的峰值膝关节扭矩。科目。我们比较了 15 名接受膝关节置换术的受试者（19 膝）（KA 组）和作为对照组的 11 名健康受试者（22 膝）的膝关节运动学和动力学性能。 KA组受试者的年龄范围为61至78岁，对照组受试者的年龄范围为26至88岁。KA组受试者患有膝骨关节炎，术后≥1年，被认为已完全康复。方法。 所有受试者都在赤脚步行、上下楼梯以及从椅子上起身时进行了分析。与对照组相比，KA 组受试者在负重膝关节伸展过程中膝关节矢状运动范围、角速度和最大膝关节力矩存在显着差异。垂直地面反应在各组之间没有显着差异。两组在步态摆动阶段的最大伸展角速度都超过 350 度/秒，但最大负载伸展速度平均仅为 140 度/秒（从椅子起身期间）。最大膝关节弯曲力矩约为 10 至 15 N.m/%BW（膝关节力矩标准化为体重百分比，单位为牛顿）。结论与讨论。我们得出的结论是，运动 ADL 需要相对较慢的负载角速度和较低的膝关节扭矩，这是膝关节置换术后运动处方中应考虑的因素。
Background and Purpose. Knee kinematics and kinetics have not been quantitatively studied during gait, stair negotiation, and rising from a chair in the same subjects, either among healthy control subjects or among subjects with knee joint impairments. Despite this paucity of data, rehabilitation goals often include achieving a specific peak knee torque at a specific, fixed angular velocity. Subjects. We compared the kinematic and kinetic performance of the knees in 15 subjects (19 knees) who bad undergone knee arthroplasty (KA group) and 11 healthy subjects (22 knees) who served as a control group. The KA group subjects ranged in age from 61 to 78 years, and the control group subjects ranged in age from 26 to 88 years The KA group subjects bad had knee osteoarthritis, were greater-than-or-equal-to 1 year postsurgery, and were considered fully rehabilitated. Methods. All subjects were analyzed during barefoot paced walking, stair ascent and descent, and arising from a chair Results. Compared with the control subjects, the KA group subjects bad significantly different knee sagittal range of motion, angular velocities, and maximum knee moments during loaded knee extension. Vertical ground reactions did not differ significantly between groups Both groups' maximum extension angular velocity exceeded 350-degrees/s during the swing phase of gait, but the maximum loaded extension velocity averaged only 140-degrees/s (during rising from a chair). Maximum knee flexion moments were approximately 10 to 15 N.m/%BW (knee moments normalized to percentage of body weight in newtons). Conclusion and Discussion. We concluded that locomotor ADLs demand relatively slow loaded angular velocities and low knee torques, a factor that should be considered in knee postarthroplasty exercise prescription.