Skip Navigation LinksHome > July/September 2014 - Volume 37 - Issue 3 > Stiffness, Pain, and Hip Muscle Strength Are Factors Associa...
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Journal of Geriatric Physical Therapy:
doi: 10.1519/JPT.0b013e3182abe7b5
Research Reports

Stiffness, Pain, and Hip Muscle Strength Are Factors Associated With Self-reported Physical Disability in Hip Osteoarthritis

Steinhilber, Benjamin PhD1; Haupt, Georg PT1; Miller, Regina; Grau, Stefan PhD2; Janssen, Pia MD1; Krauss, Inga PhD1

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Abstract

Background:

Physical disability (PD) is common among patients with osteoarthritis (OA) of the hip. Exercise therapy is proposed to be a potential intervention to reduce PD. However, the optimal targets of an exercise program are not known.

Purpose:

The aim of the present study was to identify factors that explain the level of self-reported PD in patients with hip OA. Knowledge of these factors will help develop specific and effective exercise programs.

Methods:

Data from 149 patients with hip OA (85 men and 64 women) were analyzed. Self-reported PD was quantified using the physical function subscale of the Western Ontario and McMaster index. A stepwise regression analysis was conducted to identify significant factors associated with self-reported PD.

Results:

Stiffness, pain, and hip muscle strength were found to be significant factors related to the level of self-reported PD in hip OA. These factors explained 59% (r2 adjusted = 0.59) of the variance. Body mass index, gender, age, and passive internal hip rotation and flexion range of motion explained only minor parts of the dependent variable self-reported PD.

Discussion and Conclusion:

Stiffness, pain, and hip muscle strength are associated with self-reported PD in hip OA. It is imperative that exercise treatments for hip OA include strategies to modify these factors. Further research should evaluate their role in preventing hip OA.

© 2014 The Section on Geriatrics of the American Physical Therapy Association.

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