Reduced hip muscle strength in chronic hip joint pain
Chronic hip joint pain (CHJP) is a major cause of hip dysfunction in young adults. The term CHJP encompasses a wide range of diagnostic entities, including femoroacetabular impingement (FAI), structural instability, acetabular labral tears and chondral lesions. Hip muscle performance is essential to provide both static and dynamic stability to avoid excessive joint play. However, little is known regarding the association between hip muscle strength and CHJP. The current study compared differences in strength of the hip rotator and abductor muscles between young adults with CHJP and asymptomatic controls.
35 participants with CHJP were matched with 35 controls. The CHJP group demonstrated weakness of 16-28% in all muscle groups assessed in the involved hip. Furthermore, the uninvolved hip amongst the participants in the CHJP group with unilateral hip pain was between 16-18% weaker compared to the control group.
Patients with CHJP appear weaker in the hip rotator and abductor muscles. Furthermore, it seems that the pathology may affect people bilaterally.
> From: Harris-Hayes et al., J Orthop Sports Phys Ther (2014) (Epub ahead of print). All rights reserved to Journal of Orthopaedic & Sports Physical Therapy. Click here for the Pubmed summary.