膝背屈現象與腦中風患者膝部慢速肌力表現

The Relationship between Genu Recurvatum and Low Velocity Isokinetic Knee Torque in Stroke Patients

陳文玲(Wen-Ling Chen) ； 鄭裕南(Yue-Nan Jenp)

《中華民國物理治療學會雜誌》 18卷1期 (1993/03) Pp. 49-57

https://doi.org/10.29616/JPTAROC.199303.0005

摘要

本研究係利用CYBEX325等速肌力測試儀於臥姿針對16位腦中風患者（實驗組6位，有膝背曲現象。對照組10位，無膝背屈現象）進行膝關節慢速肌力測試(30°/s)。目的在調查腦中風患者膝部肌力表現，包括尖峰力矩值與膝屈曲15°之力矩值、及此二狀況下之患側膝部肌力缺損情形與膝關節拮抗肌比值，藉以進一步探討其與步態中膝背屈現象之相關性。結果顯示與論是尖峰力矩值或膝屈曲15°力矩值，實驗組與對照組間均無顯著差異，然而實驗組之患側膝直肌肌力缺損情形顯著大於對照組。有關膝關節拮抗肌比值，實驗組與對照組間並無顯著差異。然就對照組而言，患側膝關節拮抗肌比值顯著小於健側。顯示無膝背屈者息側膝直肌表現較好，雖無統計上意義，但可看出患側膝直肌偏弱可能是造成膝背屈現象之因。

關鍵字

膝背屈現象 ； 等速肌力測試 ； 偏癱患者

並列摘要

The purpose of this study is to collect normative data of isokinetic knee flexor and extensor torque for both legs in stroke patients, and to identify the relationship between these data and genu　recurvatum phenomenon. Sixteen stroke patients with (n=6, study group) or without (n=10, control group) genu recurvatum performed isokinetic knee test at 30°/s for bilateral knee joints by using CYBEX325 machine. The torque data were recorded including peak torque (PTF, PTE), torque at knee flexion 15° (T15F, T15E), deficit of peak torque (D-PTF, DPTE), deficit of torque at knee flexion 15°(DT15F, D-T15E), hamstring-quadriceps ratio of peak torque for both knees (AHQ-PT, SHQ-PT), and hamstring-quadriceps ratio of torque at knee flexion 15° for both knees (AHQ-T15, SHQ-T15). Several t-tests were applied to identify the differences between study group and control group. Several paired t-tests were applied to test the differences between deficits of peak torque and deficits of torque at knee flexion 15°, and differences between hamstring-quadriceps ratios of sound knee and that of affected knee. No significant differences on torque values existed between study and control group. Deficits of torque in study group were found significantly greater than those of control group except DT15F, and hamstring-quadriceps ratios of affected leg were significantly smaller than that of sound leg in the control group. These findings suggested that although torque values between the study group and the control group showed no significant differences, the knee extensor in hemiparetic leg of the study group was relatively weaker than that of the control group. Rehabilitation programs to strengthen knee extensor in hemiparetic leg for patients with genu recurvatum might be emphasized.

並列關鍵字

Genu recurvatum ； Isokinetic ； Hemiplegia