The Journal of Bone and Joint Surgery (American). 2009;91:138-143.
doi:10.2106/JBJS.H.01449
© 2009 The Journal of Bone and Joint Surgery, Inc.
Imaging of Femoroacetabular Impingement
Dalia A. Fadul, MD1 and
John A. Carrino, MD, MPH1
1 The Russell H. Morgan Department of Radiology and Radiographic Science, The Johns Hopkins University, 601 North Caroline Street, JHOC 5165, Baltimore, MD 21287. E-mail address for D.A. Fadul: dfadul1{at}jhmi.edu. E-mail address for J.A. Carrino: jcarrin2{at}jhmi.edu
Disclosure: The authors did not receive any outside funding or grants in support of their research for or preparation of this work. Neither they nor a member of their immediate families received payments or other benefits or a commitment or agreement to provide such benefits from a commercial entity. No commercial entity paid or directed, or agreed to pay or direct, any benefits to any research fund, foundation, division, center, clinical practice, or other charitable or nonprofit organization with which the authors, or a member of their immediate families, are affiliated or associated.
Femoroacetabular impingement is a relatively recently described cause of hip pain that involves degenerative change in the hips of younger patients (less than thirty-five years old) as a result of predisposing pathoanatomy. The two types of impingement, cam and pincer, often occur together and overlap to varying degrees. The diagnostic workup begins with radiography, but magnetic resonance imaging and magnetic resonance arthrography provide more accurate imaging that characterizes not only the pathoanatomy but also other associated findings, including labral tears and cartilage damage.

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