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Test-retest reliability of repeated knee laxity measurements in the acute phase following a knee trauma using a Rolimeter
Linnéuniversitetet.
Linnéuniversitetet.
Mid Sweden University, Faculty of Human Sciences, Department of Health Sciences.ORCID iD: 0000-0003-4433-1218
Mid Sweden University, Faculty of Human Sciences, Department of Health Sciences. Linnéuniversitetet.ORCID iD: 0000-0001-6653-3414
2017 (English)In: Journal of Exercise Rehabilitation, ISSN 2288-176X, Vol. 13, no 5, p. 550-558Article in journal (Refereed) Published
Abstract [en]

The purpose was to examine the test-retest reliability of the Rolimeter measurement procedure in the acute time phase, following a substantial knee trauma. In total, 15 participants with acute knee trauma were examined by one single observer at three different time-points with the Rolimeter using a maximum force. The selected time-points were: baseline (0–7 days after the trauma), midpoint (3–4 weeks after the trauma), and endpoint (3–4 weeks after the trauma). The anterior-posterior displacement was recorded where the endpoint evaluation was used as the reference value. The mean anterior laxity scores remained constant over the measurement time-points for both knees, with an anterior laxity that was 2.7 mm higher (on average) in the injured than the noninjured knee (9.5 mm vs. 6.8 mm). The mean difference (i.e., bias) between laxity scores, for the injured knee, measured at endpoint versus baseline was 0.2±1.0 mm and −0.2±1.1 mm when measured at endpoint versus midpoint, with average typical errors of 0.7 and 0.8 mm and intra-class correlations that were very strong (both r=~0.93). For the same comparisons on the noninjured knee, systematic bias was close to zero (0.1±0.3 and −0.1±0.3 mm, respectively), and both the intra-class correlations were almost perfect (r=~0.99). The current study implicates that repeated Rolimeter measurements are relatively reliable for quantifying anterior knee laxity during the acute time-phases following knee trauma. Hence, the Rolimeter, in combination with manual tests, seems to be a valuable tool for identifying anterior cruciate ligament injuries.

Place, publisher, year, edition, pages
2017. Vol. 13, no 5, p. 550-558
Keywords [en]
Anterior cruciate ligament, Arthrometer, Hemarthrosis, Instability, Knee joint
National Category
Medical and Health Sciences
Identifiers
URN: urn:nbn:se:miun:diva-32309DOI: 10.12965/jer.1735104.552Scopus ID: 2-s2.0-85043697298OAI: oai:DiVA.org:miun-32309DiVA, id: diva2:1163418
Available from: 2017-12-06 Created: 2017-12-06 Last updated: 2018-03-28Bibliographically approved

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