Tan J, Balci N, Sepici V, Gener F A
Department of Physical Medicine and Rehabilitation, Gazi University, School of Medicine, Turkey.
Am J Phys Med Rehabil. 1995 Sep-Oct;74(5):364-9.
Dynamic stability of the knee joint depends on the appropriate strength ratio of quadriceps and hamstring muscles. The purpose of this investigation was to determine the maximum peak torque (MPT) and MPT ratios of hamstrings to quadriceps (H/Q) muscles in patients with knee osteoarthritis (OA). Two groups of patients were included in the study. The first group consisted of 30 patients (Group A) with the clinical and radiologic findings of knee OA. The second group consisted of 30 patients (Group B) exhibiting knee joint pain without roentgenologic findings of knee OA. The findings of two patient groups were compared with each other and also with 30 healthy subjects (Group C). Isokinetic (at 60 degrees/s and at 180 degrees/s) and isometric (at 30 degrees and at 60 degrees of knee flexion) tests were performed by the rate-limiting isokinetic dynamometer system. Isokinetic and isometric MPT loss of knee flexors and extensors was found in both patient groups with respect to controls, but MPT ratios of H/Q muscles did not show a statistically significant difference compared with the control group. This may be related to the equal strength loss of knee flexors and knee extensors in patients with knee OA. It is concluded that strengthening exercises of hamstring muscles is as important as quadriceps strengthening in rehabilitation of knee OA.
膝关节的动态稳定性取决于股四头肌和腘绳肌适当的力量比。本研究的目的是确定膝骨关节炎（OA）患者腘绳肌与股四头肌（H/Q）的最大峰值扭矩（MPT）及MPT比值。研究纳入了两组患者。第一组由30例具有膝OA临床和影像学表现的患者组成（A组）。第二组由30例表现为膝关节疼痛但无膝OA影像学表现的患者组成（B组）。将两组患者的结果相互比较，并与30名健康受试者（C组）进行比较。通过限速等速测力计系统进行等速（60度/秒和180度/秒）和等长（膝关节屈曲30度和60度）测试。与对照组相比，两组患者的膝屈肌和伸肌等速和等长MPT均有下降，但H/Q肌肉的MPT比值与对照组相比无统计学显著差异。这可能与膝OA患者膝屈肌和膝伸肌力量同等下降有关。研究得出结论，在膝OA康复中，腘绳肌强化锻炼与股四头肌强化锻炼同样重要。
