Index to Chiropractic Literature
Index to Chiropractic Literature
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ID 26446
  Title Quantification and reliability of hip internal rotation and the FADIR test in supine position using a smartphone application in an asymptomatic population
URL 620-626
Journal J Manipulative Physiol Ther. 2020 Jul-Aug;43(6):
Peer Review Yes
Publication Type Article

Objective: The purpose of this study was to quantify and report the intrarater and interrater reliability of hip internal rotation (IR) range of motion supine with the hip and knee at 90° of flexion and for the flexion-adduction-internal rotation (FADIR) test. Hip internal rotation measured in a lying supine position with the hip and knee at 90° of flexion revealed information on hip impairments. To date no simple quantification approach has been presented in this position; therefore, the FADIR test has not been quantified yet.

Methods: Twenty participants (mean ± standard deviation [SD] age, 24.0 ± 2.1 years; 10 women and 10 men) without lower-limb or back pain were recruited. Three raters evaluated each participant during 2 testing sessions, 1 day apart. A built-in smartphone compass application was used to obtain the hip IR range of motion in both procedures.

Results: Mean (± SD) supine IR was 51.7° (± 9.7°) and 62.6° (± 11.4°) for men and women, respectively. Concerning the FADIR test, mean values were 41.8° (± 9.64°) and 50.1° (± 8.0°) for men and women, respectively. The mean intrarater and interrater reliability coefficients were 0.80 and 0.72 for hip IR and 0.75 and 0.40 for the FADIR test. The standard error of the mean ranged from 4.8° to 8.3° (minimal detectable difference [MDD], 13.3° to 22.9°) for hip IR and from 4.6° to 10.3° (MDD, 12.8° to 28.6°) for the FADIR test.

Conclusion: Overall, the smartphone compass application is adequate to quantify hip IR in a lying supine position. However, the poor to moderate interrater reliability in the FADIR test and the size of the MDD values suggest that the FADIR test should be standardized.

Author keywords: Reproducibility of Results; Hip Joint; Range of Motion, Articular

Author affiliations: MOSP, SS: Department of Anatomy, University of Quebec, Trois-Rivieres, Trois-Rivieres, Canada; Chair in Functional Anatomy, University of Quebec, Trois-Rivieres, Trois-Rivieres, Canada; NF, NS, KB: Department of Human Kinetics, University of Quebec, Trois-Rivieres, Trois-Rivieres, Canada

This abstract is reproduced with the permission of the publisher; full text is available by subscription. Click on the above link and select a publisher from PubMed's LinkOut feature.


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