Watkins M P, Harris B A, Wender S, Zarins B, Rowe C R
J Bone Joint Surg Am. 1983 Mar;65(3):390-5.
The Cybex-II isokinetic dynamometer was used to measure quadriceps and hamstrings function after unilateral patellectomy in twelve patients. The interval between surgery and testing averaged twenty-six months (range, fourteen to forty-two months). Data on isokinetic and isometric performance were compared with those of the untreated limb and with those of subjects who had not been operated on but who had been matched by age, sex, and weight. On the side that had been operated on, the peak torque of the quadriceps was significantly decreased whereas the peak torque of the hamstrings was preserved. Deficits in time factors related to the development of tension and high-speed performance were documented, revealing abnormalities in both muscle groups. Although patellectomy was successful in achieving relief of pain in these patients, the results of the study confirmed that the function of the knee muscles was compromised postoperatively. The objective findings documented alterations in muscle function that correlated well with the functional limitations described by the patients.
使用Cybex-II等速测力计测量了12例单侧髌骨切除术后患者股四头肌和腘绳肌的功能。手术与测试之间的间隔平均为26个月（范围为14至42个月）。将等速和等长运动表现数据与未治疗肢体的数据以及未接受手术但在年龄、性别和体重方面匹配的受试者的数据进行了比较。在手术侧，股四头肌的峰值扭矩显著降低，而腘绳肌的峰值扭矩保持不变。记录了与张力发展和高速运动相关的时间因素缺陷，揭示了两组肌肉均存在异常。尽管髌骨切除术成功缓解了这些患者的疼痛，但研究结果证实，膝关节肌肉的功能在术后受到了损害。客观发现记录了肌肉功能的改变，这些改变与患者描述的功能限制密切相关。
