Afzali L, Kuwabara F, Zachazewski J, Browne P, Robinson B
Department of Physical Therapy, University of California, Los Angeles Medical Center 90024-1704.
Phys Ther. 1992 Aug;72(8):585-92; discussion 593-5. doi: 10.1093/ptj/72.8.585.
It has been suggested that visual analysis of isokinetic quadriceps femoris muscle torque curve (TC) shapes may have potential use in the diagnosis and prognosis of knee pathologies. The primary purpose of this pilot study was to develop a method for analyzing the shape of an isokinetic TC. Our method normalizes and averages the TC, and then uses curvilinear analysis of the TC shape to aid in diagnosis and prognosis. For demonstration, the method was applied to isokinetic quadriceps femoris muscle TC data collected using a LIDO digital dynamometer from 25 healthy volunteer subjects and retrospectively acquired from the uninvolved limbs of 37 patients with unilateral knee pathologies. The preliminary results revealed (1) that a common quadriceps femoris muscle TC shape existed for the volunteer group at 60 degrees and 180 degrees/s; (2) that the uninvolved limbs of the patient group exhibited the same shape at 60 degrees/s, but not at 180 degrees/s; and (3) that the quadriceps femoris muscle TC shape demonstrated no significant differences with respect to limb dominance or gender for either group. Further testing of this quantitative method on a larger sample is needed to determine its usefulness in the analysis and implications of TC shape concerning pathology and diagnosis.
有人提出，对股四头肌等速肌力曲线（TC）形状进行视觉分析可能在膝关节病变的诊断和预后中具有潜在用途。这项初步研究的主要目的是开发一种分析等速TC形状的方法。我们的方法对等速TC进行归一化和平均处理，然后使用TC形状的曲线分析来辅助诊断和预后。为作演示，该方法应用于使用LIDO数字测力计收集的25名健康志愿者的股四头肌等速TC数据，并回顾性获取了37名单侧膝关节病变患者未受累肢体的数据。初步结果显示：（1）志愿者组在60度/秒和180度/秒时存在共同的股四头肌TC形状；（2）患者组未受累肢体在60度/秒时呈现相同形状，但在180度/秒时并非如此；（3）两组的股四头肌TC形状在肢体优势或性别方面均无显著差异。需要对更大样本进一步测试这种定量方法，以确定其在分析TC形状与病变及诊断的相关性方面的有用性。
