Department of Community Medicine and Rehabilitation, Physiotherapy, Umeå University, Sweden.
Department of Industrial and Systems Engineering, Virginia Polytechnic Institute and State University, Blacksburg, VA, USA.
Phys Ther Sport. 2021 May;49:112-121. doi: 10.1016/j.ptsp.2021.02.010. Epub 2021 Feb 23.
We aimed to assess the test-retest reliability of a supine and standing knee joint position sense (JPS) test, respectively, and whether they discriminate knees with anterior cruciate ligament (ACL) injury from asymptomatic knees.
Repeated measures and cross-sectional.
Research laboratory.
For test-retest reliability, 24 persons with asymptomatic knees. For discriminative analysis: 1) ACLR - 18 persons on average 23 months after unilateral ACL reconstruction, 2) CTRL - 23 less-active persons, and 3) ATHL - 21 activity level-matched athletes.
Absolute error (AE) and variable error (VE).
Test-retest reliability was generally highest for AE of the standing test (ICC 0.64-0.91). Errors were less for the standing compared to the supine test across groups. CTRL had greater knee JPS AE (P = 0.005) and VE (P = 0.040) than ACLR. ACLR knees showed greater VE compared to the contralateral non-injured knees for both tests (P = 0.032), albeit with a small effect size (η = 0.244).
Our standing test was more reliable and elicited lesser errors than our supine test. Less-active controls, rather than ACLR, produced significantly greater errors. Activity level may be a more predominant factor than ACLR for knee JPS ∼2 years post-reconstruction.
我们旨在评估仰卧位和站立位膝关节位置觉（JPS）测试的重测信度，以及它们是否能区分前交叉韧带（ACL）损伤的膝关节和无症状的膝关节。
重复测量和横断面研究。
研究实验室。
对于重测信度，有 24 名无症状的膝关节。对于判别分析：1）ACL 重建术后平均 23 个月的 ACLR-18 人，2）CTRL-23 名较少活动的人，和 3）ATHL-21 名活动水平匹配的运动员。
绝对误差（AE）和变量误差（VE）。
站立测试的 AE 重测信度通常最高（ICC 0.64-0.91）。与仰卧位测试相比，站立位测试的误差较小。与 ACLR 相比，CTRL 膝关节的 JPS AE（P=0.005）和 VE（P=0.040）更大。ACLR 膝关节在两种测试中与对侧未受伤膝关节相比 VE 更大（P=0.032），尽管效应量较小（η=0.244）。
我们的站立测试比仰卧测试更可靠，引起的误差更小。活动水平较低的对照组而不是 ACLR 产生了更大的误差。在 ACL 重建术后约 2 年，活动水平可能比 ACLR 更能影响膝关节 JPS。
