The Importance of Hip Shape in Predicting Hip Osteoarthritis
Purpose of review
This narrative review summarizes the evidence relating hip shape and risk of osteoarthritis at the hip, with a focus on the most recent body of work.
Hip osteoarthritis (OA) is a prevalent and potentially disabling condition with few effective non-surgical treatment options. Risk factors for hip OA appear to differ somewhat from those at other sites. Variations in hip morphology, whether assessed through standard geometric measures or statistical modeling methods, seem to increase hip OA risk and may provide a novel approach to interventions to reduce or prevent OA. Such variations have also led to focused surgical interventions to “correct” abnormal shape, although comparisons with non-surgical management are lacking.
There remains a lack of understanding regarding the optimal management, whether surgical, non-surgical, or a combination, for FAI syndrome. Even less is known regarding other potential morphologic variations that may contribute to OA risk. Additionally, many individuals who have shape variations that would seem to increase their risk will never develop hip OA. Questions remain regarding key risk factors for hip OA development, which individuals should be targeted for therapies, whether directed at symptoms, function, or prevention, and which therapies should be studied and offered. Trials are underway to help address some of these questions.
KeywordsHip osteoarthritis Hip morphology Cam and pincer morphology Femoroacetabular impingement
Compliance with Ethical Standards
Conflict of Interest
Amanda E. Nelson reports grants from NIAMS K23AR061406 and the CDC, during the conduct of the study, and personal fees from GSK and from Health Press Ltd., outside the submitted work.
Human and Animal Rights and Informed Consent
This article does not contain any studies with human or animal subjects performed by any of the authors.
References and Recommended Reading
Papers of particular interest, published recently, have been highlighted as: • Of importance •• Of major importance
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