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J Electromyogr Kinesiol. 2015 Dec;25(6):944-50. doi: 10.1016/j.jelekin.2015.10.010. Epub 2015 Oct 23.

Hip joint motion and gluteal muscle activation differences between healthy controls and those with varying degrees of hip osteoarthritis during walking.

Author information

1
School of Physiotherapy, Faculty of Health Professions, Dalhousie University, Halifax, NS, Canada; School of Health and Human Performance, Faculty of Health Professions, Dalhousie University, Halifax, NS, Canada; School of Biomedical Engineering, Faculty of Engineering, Dalhousie University, Halifax, NS, Canada. Electronic address: djr@dal.ca.
2
School of Physiotherapy, Faculty of Health Professions, Dalhousie University, Halifax, NS, Canada; School of Health and Human Performance, Faculty of Health Professions, Dalhousie University, Halifax, NS, Canada. Electronic address: jmoreside@dal.ca.
3
School of Physiotherapy, Faculty of Health Professions, Dalhousie University, Halifax, NS, Canada; School of Health and Human Performance, Faculty of Health Professions, Dalhousie University, Halifax, NS, Canada; Department of Surgery, Division of Orthopaedics, Dalhousie University, Halifax, NS, Canada. Electronic address: iw@drivanwong.com.

Abstract

PURPOSE:

Compare gluteal muscle activation patterns and three-dimensional hip joint movements among those with severe hip osteoarthritis (OA), moderate OA and a healthy group during walking.

SCOPE:

20 individuals with severe OA, 20 with moderate OA and 20 healthy individuals were recruited. Three-dimensional hip motion and surface electromyograms from gluteus maximus and medius were collected during treadmill walking at a self-selected speed. Angular displacement characteristics were calculated for three-dimensional hip motions. Principal component analysis extracted amplitude and temporal features from electromyographic waveforms. Analysis of Variance models and student t-tests using Bonferroni corrections determined between group differences in these gait features (α = 0.05).

CONCLUSIONS:

Sagittal plane hip range of motion was significantly reduced with increasing severity of OA (p < 0.05) where as frontal and transverse plane range of motion was reduced in the severe OA group only (p < 0.05). Activation patterns of gluteus medius and maximus did not differ between the healthy group and those with moderate hip OA (p > 0.05). Individuals with severe OA walking with more prolonged gluteus maximus activation and prolonged and less dynamic gluteus medius activation compared to the other two groups (p < 0.05). This study highlights the changing function of the hip joint during walking with increasing hip OA severity.

KEYWORDS:

Electromyography; Gait analysis; Gluteus maximus; Gluteus medius; Hip osteoarthritis; Principal component analysis; Range of motion

PMID:
26542484
DOI:
10.1016/j.jelekin.2015.10.010
[Indexed for MEDLINE]

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