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Abstract Number: 0221

Trunk Movement Compensation Is Associated with Physical Performance Measures and Fatigue Deficits in Hip Osteoarthritis

Jesse Christensen1, David Quammen2, Justin Rigby2, Cory Christiansen3 and Jennifer Stevens-Lapsley3, 1VA Salt Lake City Health Care System, Salt Lake City, UT, 2University of Utah, Salt Lake City, UT, 3Department of Physical Medicine and Rehabilitation, University of Colorado Anschutz Medical Campus, Aurora, CO

Meeting: ACR Convergence 2021

Keywords: Hip Osteoarthritis, inertial measurement units, Muscle strength, six-minute walk test, trunk movement compensation

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Session Information

Date: Saturday, November 6, 2021

Title: Osteoarthritis – Clinical Poster I (0210–0224)

Session Type: Poster Session A

Session Time: 8:30AM-10:30AM

Background/Purpose: Movement compensation is common in people with hip osteoarthritis (HOA) and a biomarker of physical performance and muscle strength deficits in older adults. Inertial measurement units (IMUs) offer novel methods for identifying movement compensation during functional activities. However, the relationship between deficits in physical performance, muscle strength and fatigue on movement compensation is unknown in people with HOA. Therefore, the purpose of this study was to compare the relationship between trunk movement compensation identified by IMUs and physical function assessed by validated physical performance and muscle strength measures.

Methods: Thirty-five participants (63.3+7.4 years, 57% male, 28.6+4.5 kg/m2) with end-stage HOA who were scheduled to undergo a total hip arthroplasty were enrolled in the study. A cross-sectional study design was used. Two inertial measurement units were used to assess trunk onto pelvis movement compensation during the six-minute walk test (6MWT). Hip abduction, knee extension and knee flexion strength were measured using hand-held dynamometer. General linear regression models were used to regress trunk movement compensation onto 6MWT performance and muscle strength measures. Pairwise t-tests were used to evaluate the influence fatigue has on trunk movement compensation by comparing the first and last minute of the 6MWT.

Results: Greater trunk movement compensation was related to poorer 6MWT (p< 0.01; r=-0.46). Greater hip abduction weakness was related to increased trunk movement compensation in both the sagittal (p=0.01; r=-0.44) and frontal (p=0.04; r=-0.37) planes. Participants demonstrated greater trunk movement compensation during the last minute compared to the first minute (p< 0.01) of 6MWT.

Conclusion: Trunk movement compensation has a negative influence on physical function in people with HOA. Greater trunk movement compensation relates to poorer performance on the six-minute walk test and greater hip abduction weakness. Prolonged walking leads to a greater increase in trunk movement compensation, which could have future ramifications of accelerated arthritic changes in secondary joints.

Relationship between trunk angular displacement on six-minute walk test performance

Peak trunk movement compensation during the six-minute walk test

Relationship between muscle weakness on trunk angular displacement during six-minute walk test


Disclosures: J. Christensen, None; D. Quammen, None; J. Rigby, Azena Medical LLC, 2; C. Christiansen, Hanger Clinics, 5; J. Stevens-Lapsley, None.

To cite this abstract in AMA style:

Christensen J, Quammen D, Rigby J, Christiansen C, Stevens-Lapsley J. Trunk Movement Compensation Is Associated with Physical Performance Measures and Fatigue Deficits in Hip Osteoarthritis [abstract]. Arthritis Rheumatol. 2021; 73 (suppl 9). https://acrabstracts.org/abstract/trunk-movement-compensation-is-associated-with-physical-performance-measures-and-fatigue-deficits-in-hip-osteoarthritis/. Accessed .
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All abstracts accepted to ACR Convergence are under media embargo once the ACR has notified presenters of their abstract’s acceptance. They may be presented at other meetings or published as manuscripts after this time but should not be discussed in non-scholarly venues or outlets. The following embargo policies are strictly enforced by the ACR.

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