一种评估前交叉韧带重建术后股四头肌力量对称性的新型临床友好型测试方案
简介
本研究评估了一种基于负重膝关节伸展（WBKE）机器的临床友好型方案，用于评估前交叉韧带（ACL）重建术后股四头肌对称性的信度和效度，并与等速肌力测试（IKD）进行比较。共纳入74例ACL重建术后6-14个月的患者（16-50岁）。结果显示，WBKE测试的重测信度极佳（ICC=0.94-0.98）；肢体对称指数在IKD为90.6%±12.4%，WBKE为87.…
英文摘要
OBJECTIVES: To evaluate the reliability and validity of a clinic-friendly protocol using a weight-based knee extension (WBKE) machine to assess quadriceps symmetry after anterior cruciate ligament (ACL) reconstruction, compared to isokinetic dynamometry (IKD). DESIGN: Cross-sectional reliability and validity study. SETTING: Orthopedic rehabilitation and sports medicine clinic. PARTICIPANTS: Seventy-four individuals (aged 16-50 years) between 6 and 14 months post-ACL reconstruction. MAIN OUTCOME MEASURES: Test-retest reliability (intraclass correlation coefficients, ICC) and validity (limb symmetry index, Pearson's correlation, linear regression, Bland-Altman analysis) of WBKE compared to IKD. RESULTS: The WBKE test showed excellent test-retest reliability (ICC = 0.94-0.98). The limb symmetry index was 90.6% ± 12.4% for IKD and 87.5% ± 12.5% for WBKE, with a mean difference of -3.16% (95% CI: -4.8 to -1.5, p < 0.001). Bland-Altman analysis indicated 95% limits of agreement from 8.31% to -14.63%. The correlation between WBKE and IKD was strong (r = 0.89, 95% CI: 0.81-0.94, p < 0.001), supported by linear regression (R2 = 0.79, p < 0.001). CONCLUSIONS: The WBKE test demonstrated excellent reliability and strong validity for assessing quadriceps symmetry post-ACL reconstruction. It offers a practical, accessible alternative to isokinetic testing for monitoring strength recovery in clinical practice.