Reliability of Intratester and Intertester Measurements Derived from an Instrumented Ankle Arthrometer

Context: Measurement reliability is critical when new sports-medicine devices or techniques are developed. Objective: To determine the reliability of laxity measurements obtained from an instrumented ankle arthrometer. Design: Intratester reliability was examined using a test–retest design, and inte...

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Bibliographic Details
Published in:Journal of sport rehabilitation 2003-08, Vol.12 (3), p.208-220
Main Authors: Hubbard, Tricia J., Kovaleski, John E., Kaminski, Thomas W.
Format: Article
Language:English
Subjects:
Ankle
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Summary:Context: Measurement reliability is critical when new sports-medicine devices or techniques are developed. Objective: To determine the reliability of laxity measurements obtained from an instrumented ankle arthrometer. Design: Intratester reliability was examined using a test–retest design, and intertester reliability was assessed using the measurements recorded by 2 different examiners on a separate group of participants. Setting: Sports-medicine research laboratory. Participants: 40 participants with no history of ankle injury, equally divided across the 2 studies. Measurements: Laxity measurements included anteroposterior (AP) displacement during loading to 125 N. Inversion–eversion (I–E) rotation was tested during loading to 4000 N-mm. The measures were analyzed using intraclass correlation coefficients (ICCs) and dependent t tests. Results: Good to excellent ICCs (.80–.99) for intratester and intertester reliability. A significant difference in measures was observed between testers for both AP displacement and I–E rotation. Conclusions: Laxity measurements from an instrumented ankle arthrometer are reliable across test days and examiners
ISSN:1056-6716
1543-3072
DOI:10.1123/jsr.12.3.208