• Phys Ther Sport · May 2021

    Development of supine and standing knee joint position sense tests.

    • Andrew Strong, Divya Srinivasan, and Charlotte K Häger.
    • Department of Community Medicine and Rehabilitation, Physiotherapy, Umeå University, Sweden. Electronic address: andrew.strong@umu.se.
    • Phys Ther Sport. 2021 May 1; 49: 112-121.

    ObjectivesWe 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.DesignRepeated measures and cross-sectional.SettingResearch laboratory.ParticipantsFor 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.Main Outcome MeasuresAbsolute error (AE) and variable error (VE).ResultsTest-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 (ηp2 = 0.244).ConclusionsOur 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.Copyright © 2021 The Author(s). Published by Elsevier Ltd.. All rights reserved.

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