An investigation to examine the inter-tester and intra-tester reliability of the Rolimeter® knee tester, and its sensitivity in identifying knee joint laxity

Authors

  • Julian Hatcher,

    Corresponding author
    1. Directorate of Sport and Centre for Rehabilitation and Human Performance Research, School of Health care Professions. University of Salford. Salford M6 6PU, United Kingdom
    • Directorate of Sport and Centre for Rehabilitation and Human Performance Research, School of Health care Professions. University of Salford. Salford M6 6PU, United Kingdom. Tel.: +44 0161 295 2293; fax: +44 0161 295 2395
    Search for more papers by this author
  • Alison Hatcher,

    1. Orthopaedic and Trauma Directorate, North Cheshire Hospitals NHS Trust, Warrington, WA5 1QG. United Kingdom
    Search for more papers by this author
  • Jamie Arbuthnot,

    1. Orthopaedic and Trauma Directorate, North Cheshire Hospitals NHS Trust, Warrington, WA5 1QG. United Kingdom
    Search for more papers by this author
  • Mike McNicholas

    1. Orthopaedic and Trauma Directorate, North Cheshire Hospitals NHS Trust, Warrington, WA5 1QG. United Kingdom
    Search for more papers by this author

Abstract

Purpose: The purpose of this study is to evaluate the Rolimeter® knee tester (Aircast®, Europe) as reliable and clinically sensitive tool for identifying and quantifying knee joint laxity utilising a sample of both known ACLD and normal knees.

Methods: Thirty matched subjects (15 known ACLD and 15 normal subjects) were tested for knee joint laxity using the Rolimeter®. Each subject was measured at both 90° and 30° of knee flexion, by each of the six investigators. This was then repeated again by all six investigators so that inter-tester and intra-tester reliability could be examined.

Results: Results showed that there was good reliability between testers, and intra-tester reliability was good for both left and right knees in both 90° and 30° of flexion. Results also demonstrated a high level of sensitivity for determining knee joint laxity in ACLD compared to normal knees.

Conclusion: The Rolimeter® knee tester is a reliable device for quantifying knee joint laxity, and is sensitive enough to identify anterior cruciate ligament deficiency. © 2005 Orthopaedic Research Society. Published by Elsevier Ltd. All rights reserved.

Ancillary