Leppilahti J, Siira P, Vanharanta H, Orava S
Dept. of Surgery, Oulu University Hospital, Finland.
Int J Sports Med. 1996 Nov;17(8):619-23. doi: 10.1055/s-2007-972905.
The purposes of this study was 1) to assess the plantar flexion and dorsiflexion peak torques (PT) of the ankles at 30, 90 and 240.. s-1 in 101 patients (86 men, 15 women) who had been operated on for unilateral, complete closed Achilles tendon (AT) rupture at Oulu University Hospital, Oulu, Finland, in the period 1987-1992, 2) to determine whether comparison between the legs shows any impairment, 3) to study whether the weakness is speed-dependent, 4) to determine at what angular displacement of the ankle the weakness is manifested, 5) to study how the results correlate with age, type of operation and follow-up time. The Lido Multi-joint II dynamometer was used for the measurements. There was no significant dorsiflexion weakness detectable upon comparison between the legs, but the mean relative peak torque deficits in the injured limb were 8.4, 9.0 and 3.0% at 30, 90 and 240.. s-1 respectively for the men and 15.0, 16.6 and 6.4% for the women. The mean percentage torque differences were significantly greater in the women at all the test speeds (p < 0.05). The difference in PT was significantly greater at the two low test speeds (30 and 90.. s-1) than at the high speed (240.. s-1, p < 0.001). The weakness was manifested at an angular displacement of 80-120 degrees, where the average peak work (PW) difference between the two legs was significant in both sexes (p < 0.05). The patient's age (21-63), the type of operation (Lindholm or Silfverskiöld technique) and the follow-up time (0.7-6.7 years) did not significantly affect the results. In conclusion, and AT rupture implied an average 3.0 to 16.6% impairment in isokinetic plantar flexion muscle strength. The impairment was greater in the women, was manifested at an angular displacement of 80-120 degrees, and was greater at low test speeds. Age, type of operation and follow-up time did not account for the PT differences between the patients.
1）评估1987年至1992年期间在芬兰奥卢大学医院接受单侧、完全闭合性跟腱（AT）断裂手术的101例患者（86例男性，15例女性）在30、90和240°/s时踝关节的跖屈和背屈峰值扭矩（PT）；2）确定双腿之间的比较是否显示出任何损伤；3）研究肌无力是否与速度有关；4）确定踝关节在什么角位移时出现肌无力；5）研究结果如何与年龄、手术类型和随访时间相关。使用Lido多关节II测力计进行测量。双腿比较时未检测到明显的背屈肌无力，但男性受伤肢体在30、90和240°/s时的平均相对峰值扭矩 deficit分别为8.4%、9.0%和3.0%，女性分别为15.0%、16.6%和6.4%。在所有测试速度下，女性的平均扭矩差异百分比均显著更大（p<0.05）。在两个低测试速度（30和90°/s）下，PT差异显著大于高速度（240°/s，p<0.001）。肌无力出现在80-120度的角位移处，此时两性双腿之间的平均峰值功（PW）差异均显著（p<0.05）。患者的年龄（21-63岁）、手术类型（Lindholm或Silfverskiöld技术）和随访时间（0.7-6.7年）对结果没有显著影响。总之，AT断裂意味着等速跖屈肌力平均受损3.0%至16.6%。女性的损伤更大，出现在80-120度的角位移处，且在低测试速度下更大。年龄、手术类型和随访时间不能解释患者之间的PT差异。
