Fujita Remi, Matsui Yasumoto, Harada Atsushi, Takemura Marie, Kondo Izumi, Nemoto Tetsuya, Sakai Tadahiro, Hiraiwa Hideki, Ota Susumu
Department of Rehabilitation and Care, Seijoh University, Japan; Department of Advanced Medicine, National Center for Geriatrics and Gerontology, Japan.
Department of Advanced Medicine, National Center for Geriatrics and Gerontology, Japan.
J Phys Ther Sci. 2016 Dec;28(12):3320-3324. doi: 10.1589/jpts.28.3320. Epub 2016 Dec 27.
[Purpose] The purpose of this study was to elucidate the relationship between knee muscle strength and knee pain in activities of daily living, based on consideration of the difference between extension and flexion strength (Q - H) and the hamstring:quadriceps (H:Q) ratio in patients with knee osteoarthritis. [Subjects and Methods] The participants were 78 females with knee osteoarthritis, and a total of 133 knees that had not been treated surgically were the targets of this research. The legs were divided according to dominance. Isometric knee extension and flexion muscle strength and knee pain during activities of daily living were measured. The H:Q ratio (flexion/extension muscle strength) and the difference between extension and flexion strength, (extension muscle strength/weight) minus (flexion muscle strength/weight), that is, Q - H, were calculated. The correlation between these indices and the knee pain score during activities of daily living was investigated. [Results] Greater knee pain during activities of daily living was related to lower knee extension muscle strength and Q - H in both the dominant and nondominant legs. Knee flexion muscle strength and the H:Q ratio were not significantly correlated with knee pain during any activities of daily living. [Conclusion] Knee extension muscle strength and Q - H were found to be significantly correlated with knee pain during activities of daily living, whereas the H:Q ratio was not.
[目的] 本研究的目的是基于对膝关节骨关节炎患者伸展和屈曲力量差异（Q - H）以及腘绳肌与股四头肌比例（H:Q）的考虑，阐明日常生活活动中膝关节肌肉力量与膝关节疼痛之间的关系。[对象与方法] 研究对象为78名患有膝关节骨关节炎的女性，共计133个未经手术治疗的膝关节。根据优势腿对双腿进行划分。测量等长膝关节伸展和屈曲肌肉力量以及日常生活活动中的膝关节疼痛。计算H:Q比例（屈曲/伸展肌肉力量）以及伸展和屈曲力量之差，即（伸展肌肉力量/体重）减去（屈曲肌肉力量/体重），也就是Q - H。研究这些指标与日常生活活动中膝关节疼痛评分之间的相关性。[结果] 无论是优势腿还是非优势腿，日常生活活动中更严重的膝关节疼痛都与更低的膝关节伸展肌肉力量和Q - H相关。膝关节屈曲肌肉力量和H:Q比例与任何日常生活活动中的膝关节疼痛均无显著相关性。[结论] 研究发现，日常生活活动中膝关节伸展肌肉力量和Q - H与膝关节疼痛显著相关，而H:Q比例则不然。
