Thus this study aimed at comparing the hip abductors of a group of subjects with unilateral clinical hip OA with those of a group of healthy older adults. 11 Information of this nature would have direct clinical implications for the conservative treatment of hip OA. In addition, it is also unknown whether there are changes in EMG activation in the unaffected limb of subjects with hip OA, similar to the proprioceptive impairments demonstrated in the unaffected side of subjects with knee OA. Further quantification of any change in the level of activation would also be of clinical and academic interest. Further clarification of possible dysfunction in the hip abductors, particularly GMD, is needed as it is unclear whether there is an increase or decrease in the level of activation of these muscle groups in hip disease. 22 Potential reasons for this include variations in the severity of OA studied, the task performed, and analysis techniques. 22 However, as seen above, reports of GMD activation changes with hip joint disease are inconsistent, with some researchers supporting 19 and others refuting 19, 21 traditional clinical observations, which suggests that GMD is a muscle prone to weakness and inhibition. This research is consistent with theories on the TFL, stating that it is prone to tightness and overactivity in the presence of joint disease. 20 Higher levels of GMD and TFL activation relative to maximum voluntary contraction have also been demonstrated during gait in subjects with hip OA after osteotomy. 19 In contrast, another found continuous activity in the GMD of subjects with severe hip OA. 17, 18 One gait study found continuous activity in the TFL and inhibition of the GMD of some subjects with hip OA. 15, 16 The GMD also provides joint stability 15 and is active when postural stability is challenged in the mediolateral (ML) direction. In all cases a dysfunction has been found in the tensor fascia lata (TFL) or gluteus medius (GMD), which work together to maintain the level of the pelvis in single leg stance. 14ДЄlthough fewer studies have explored the relationship between hip joint disease and neuromuscular dysfunction, a link has been reported between abnormal muscular activity and hip OA. Using electromyography (EMG) another study found a higher level of activation in the quadriceps during a knee extension task of women with knee OA. A gait study found changes in quadriceps control of knee flexion in subjects with knee pain caused by activity, 12 and recent evidence supports a relationship between quadriceps weakness and the radiographic presence 8 but not progression 13 of knee OA. Several studies have shown proprioceptive impairments in the affected 10, 11 and unaffected limb 11 in subjects with OA. Most of the evidence linking neuromuscular deficits to joint damage in humans has involved the knee. Not surprisingly there has been considerable interest in the role of a neuromuscular disturbance in the aetiology of osteoarthritis (OA). 2 Impairments in the neuromuscular system would therefore have the potential to contribute to joint damage. 1 These multiple functions are so important that a joint is said to survive at the pleasure of the neuromuscular system. WOMAC, Western Ontario and McMaster University Osteoarthritis (index)ДЄ healthy joint is dependent on the neuromuscular system to provide movement, joint stability, shock absorption, and proprioception.RM-ANOVA, repeated measures analysis of variance.This has implications for the progressive nature of the disease and for its conservative management. There was no difference in the force platform data between the groups (p=0.078).Д¬onclusions: The increased magnitude of gluteus medius activation in the group with hip osteoarthritis is evidence of a muscular dysfunction associated with hip disease. In addition, there were no differences in the magnitude of gluteus medius activation between the sides (p=0.733).

Results: Subjects with clinical hip osteoarthritis had higher gluteus medius activation than the healthy older adults (p=0.037). The subjects performed a stepping task during which recordings were obtained using surface electromyograms from the hip abductors, and kinetic data were obtained from a dual force platform. Methods: 19 subjects with clinical unilateral hip osteoarthritis and 19 healthy controls were investigated. ( b) To compare the magnitude of activation of the gluteus medius and tensor fascia lata between sides in a group of subjects with clinical unilateral hip osteoarthritis and a group of healthy older adults. Objectives: ( a) To compare the magnitude of gluteus medius and tensor fascia lata activation between a group of subjects with clinical unilateral hip osteoarthritis and a group of healthy older adults.

Gmd speed time no root