Association Between Knee Extension Strength at 3 and 6 Months After Anterior Cruciate Ligament Reconstruction
Association Between Knee Extension Strength at 3 and 6 Months After Anterior Cruciate Ligament Reconstruction
复制标题
DOI：
10.1123/jsr.2021-0336
复制
发表时间：
2023-01-01
影响因子：
1.7
通讯作者：
Yagishita, Kazuyoshi
中科院分区：
文献类型：
--
作者：
Mitomo, Sho;Aizawa, Junya;Yagishita, Kazuyoshi
背景：前交叉韧带重建后膝关节伸展强度的不足一直是一个主要问题。据报道，手术肢体的膝关节伸展强度恢复不充分延迟了恢复运动并增加了再损伤风险。因此，重建后早期检测膝关节伸展强度缺陷可能有助于计划早期干预措施以管理损伤。本研究旨在阐明前交叉韧带重建术后3个月和6个月膝关节伸展强度之间的相关性。设计：回顾性研究。方法：采用腘绳肌移植物行初次前交叉韧带重建术的50例患者纳入研究。术后3个月，测量60 °/s等速膝关节伸展强度（IKE）的肢体对称指数（LSI）、肿胀程度、膝关节屈伸被动活动度和小腿前伸距离。术后6个月，测量IKE的LSI为60度/秒，这被用作主要结局。以术后6个月的IKE的LSI为因变量，术后3个月的IKE的LSI为自变量进行相关性分析。随后，进行多元回归分析，以术后6个月IKE的LSI为因变量;术后3个月IKE的LSI为自变量;其他变量、人口统计学信息和手术数据为协变量。结果：相关分析显示，术后3个月和6个月的IKE的LSI相关（r =.535，P <.001）。在多元回归分析中，术后3个月IKE的LSI与术后6个月的LSI显著相关，即使将其他变量作为协变量（R2 =.349，P =.004）。结论：在预测术后6个月膝关节伸展力量不对称性方面，术后3个月膝关节伸展力量不对称性可能比其他与膝关节力量相关的变量更有用。
Context: Deficits in knee extension strength after anterior cruciate ligament reconstruction have been a major problem. The inadequate recovery of the knee extension strength of surgical limb reportedly delays return to sports and increases reinjury risk. Accordingly, the early detection of knee extension strength deficits after reconstruction may help plan early interventions to manage impairment. This study aimed to clarify the association between knee extension strength at 3 and 6 months after anterior cruciate ligament reconstruction. Design: Retrospective study. Methods: Fifty patients who underwent primary anterior cruciate ligament reconstruction using hamstring grafts were included. At 3 months postoperatively, the limb symmetry index (LSI) of isokinetic knee extension strength (IKE) at 60 degrees/s, degree of swelling, passive range of motion of knee flexion and extension, and anterior leg reach distance were measured. At 6 months postoperatively, the LSI of IKE was measured at 60 degrees/s, which was used as the main outcome. A correlation analysis was performed with the LSI of IKE at 6 months postoperatively as the dependent variable and the LSI of IKE at 3 months postoperatively as the independent variable. Subsequently, a multiple regression analysis was performed, with LSI of IKE at 6 months postoperatively as the dependent variable; LSI of IKE at 3 months postoperatively as the independent variable; and other variables, demographic information, and surgical data as covariates. Results: The correlation analysis revealed that the LSIs of IKE at 3 and 6 months postoperatively were correlated (r= .535, P < .001). In the multiple regression analysis, the LSI of IKE at 3 months postoperatively was significantly associated with that at 6 months postopera-tively, even when other variables were included as covariates (R2 = .349, P = .004). Conclusion: Asymmetry of knee extension strength at 3 months postoperatively could be more useful than other variables related to knee strength in predicting the asymmetry of knee extension strength at 6 months postoperatively.