BACKGROUND: @entity570 ( @entity571 ) is a major cause of morbidity. Rehabilitation for this population focus on strengthening the hip muscles, particularly the abductors, however the deficit in function of these muscles is unclear. OBJECTIVES: To review the evidence for the differences in structure and function of hip abductors (gluteus medius and minimus and @entity392 ) in hip @entity571 . METHODS: A systematic review was conducted using MEDLINE, AMED, CINAHL and SportDISCUS, from the earliest date to September 2013. Studies that compared hip @entity571 @entity1 with controls, or the unaffected contralateral hip were included. Studies needed to report data on an outcome related to gross gluteal muscle function. RESULTS: An initial yield of 141 studies was reduced to 22 after application of inclusion/exclusion criteria. Meta-analysis confirmed greater hip abductor strength in the control group (standardized mean difference = @entity7126 -0.93, 95%CI -1.70 to -0.16) and the unaffected limb ( @entity7126 -0.26, 95%CI -0.48 to -0.04). Meta-analyses showed no differences in muscle size either between groups or limbs. Few electromyography studies have been reported and meta-analysis was not possible. CONCLUSION: Hip abductor strength is reduced in @entity571 @entity1 compared to healthy controls and the unaffected limb. Data on muscle size and activity is insufficient.

Structure and function of the abductors in XXXX with @entity570 : Systematic review and meta-analysis.

@entity1 :: ('9606', 'Species') :: ['patients'] @entity7126 :: ('MESH:C537501', 'Disease') :: ['SMD'] @entity571 :: ('MESH:D010003', 'Disease') :: ['OA'] @entity392 :: ('MESH:D014012', 'Disease') :: ['tensor fascia lata'] @entity570 :: ('MESH:D015207', 'Disease') :: ['Hip osteoarthritis']
@entity1 :: (9606,Species) :: ['patients']
