McNair P J, Wood G A, Marshall R N
Faculty of Health Studies, Auckland Institute of Technology, New Zealand.
Clin Biomech (Bristol). 1992 Aug;7(3):131-7. doi: 10.1016/0268-0033(92)90027-2.
The relationship between hamstring muscle stiffness and the functional ability level of 17 subjects with complete anterior cruciate ligament rupture confirmed at arthroscopy was examined. The hamstring muscles were modelled as a single degree of freedom mass spring system with a damping component. Using this model the stiffness of these muscles was examined at 30, 45, and 60% of a maximum voluntary isometric muscle action. The functional ability of the subjects, attained using the Noyes knee rating system, was then correlated to muscle stiffness measures. Positive correlations of 0.71, 0.72, and 0.62 at the three respective muscle loading levels were observed. These findings suggested that hamstring muscle stiffness may have an important role to play in the functional ability of subjects with anterior cruciate ligament deficiency. At this time there is no single effective treatment for all individuals with anterior cruciate ligament deficiency. Those individuals who undergo a conservative management programme are usually treated with hamstring muscle exercises for improving knee flexion strength. The current study provides evidence that hamstring exercises may alter other properties of muscles, such as their active stiffness, which in turn may influence the functional ability of the anterior cruciate ligament deficient individual.
研究了17名经关节镜检查确诊为前交叉韧带完全断裂患者的腘绳肌僵硬度与功能能力水平之间的关系。将腘绳肌建模为具有阻尼成分的单自由度质量弹簧系统。使用该模型，在最大自主等长肌肉动作的30%、45%和60%时检测这些肌肉的僵硬度。然后，使用诺伊斯膝关节评分系统评估受试者的功能能力，并将其与肌肉僵硬度测量值进行关联。在三个相应的肌肉负荷水平上分别观察到0.71、0.72和0.62的正相关。这些发现表明，腘绳肌僵硬度可能在前交叉韧带缺陷患者的功能能力中发挥重要作用。目前，对于所有前交叉韧带缺陷患者，尚无单一有效的治疗方法。那些接受保守治疗方案的患者通常通过腘绳肌锻炼来提高膝关节屈曲力量。当前的研究提供了证据，表明腘绳肌锻炼可能会改变肌肉的其他特性，如主动僵硬度，这反过来可能会影响前交叉韧带缺陷个体的功能能力。
