PURPOSE: Compare gluteal muscle activation patterns and three-dimensional hip joint movements among those with severe @entity570 ( @entity571 ), moderate @entity571 and a healthy group during walking. SCOPE: 20 individuals with severe @entity571 , 20 with moderate @entity571 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 (a=0.05). CONCLUSIONS: Sagittal plane hip range of motion was significantly reduced with increasing severity of @entity571 (p<0.05) where as frontal and transverse plane range of motion was reduced in the severe @entity571 group only (p<0.05). Activation patterns of gluteus medius and maximus did not differ between the healthy group and those with moderate @entity570 (p>0.05). Individuals with severe @entity571 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 @entity570 severity.

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

@entity571 :: ('MESH:D010003', 'Disease') :: ['OA'] @entity570 :: ('MESH:D015207', 'Disease') :: ['hip osteoarthritis', 'hip OA']
@entity570 :: (MESH:D015207,Disease) :: ['hip osteoarthritis']
