Broberg C, Grimby G
Scand J Rehabil Med Suppl. 1983;9:108-17.
Torque curves were recorded during passive and active ankle joint movements at three preset angular velocities (30, 60 and 120 degrees/s) with the subject in the supine position and 45 degrees hip and knee angles. Recordings were performed in normal subjects (n = 11), patients with clinical spasticity (n = 10) and patients with Parkinson's disease (n = 7). The torque curves recorded during passive dorsiflexion followed by plantar flexion showed a counterclockwise hysteresis loop with minimal area in the normal subjects and a large area in patients, especially at the highest velocity. The torque increase during dorsiflexion was proportional to the angular velocity in the patients with spasticity but not in the patients with Parkinson's disease. In the patients with spasticity, a good correlation was found between clinical assessment of hypertonia and measurements of torque during passive movements but not torque values during maximal voluntary dorsiflexion. A model for data reduction and estimation of instant slope values on different parts of the torque-angle curve is suggested. The use of ankle torque recordings for evaluation of treatment effects is exemplified.
在受试者仰卧位、髋关节和膝关节角度为45度的情况下，以三种预设角速度（30、60和120度/秒）进行被动和主动踝关节运动时记录扭矩曲线。记录在正常受试者（n = 11）、临床痉挛患者（n = 10）和帕金森病患者（n = 7）中进行。被动背屈后接着跖屈时记录的扭矩曲线显示，正常受试者有最小面积的逆时针滞后环，而患者有大面积的滞后环，尤其是在最高速度时。背屈期间的扭矩增加在痉挛患者中与角速度成正比，但在帕金森病患者中并非如此。在痉挛患者中，被动运动期间的高张力临床评估与扭矩测量之间存在良好的相关性，但与最大自主背屈期间的扭矩值无关。提出了一种用于数据简化和估计扭矩-角度曲线不同部分即时斜率值的模型。举例说明了使用踝关节扭矩记录来评估治疗效果。
