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MRI may predict adverse tissue reaction in metal-on-metal hip replacement patients
Date:3/18/2013

CHICAGO Magnetic Resonance Imaging (MRI) can detect a failing, or potentially failing, metal-on-metal hip implant (MoM) early on, according to a new study presented today at the 2013 Annual Meeting of the American Academy of Orthopaedic Surgeons (AAOS). Early detection can result in timely revision surgery, decreasing the risk for further tissue damage and pain.

Researchers reviewed the MRI images of 70 patients who ultimately underwent revision surgery for a failed MoM implant. The images were assessed for the presence of tissue damage, swelling and other characteristics.

The study found that an MRI is highly sensitive and specific to identifying tissue damage in MoM total hip replacement (THR) patients. Early identification of at-risk patients can result in timely revision surgery, when necessary, decreasing pain and future damage to surrounding hip tissue.

Also today at the 2013 AAOS Annual meeting, the educational session "Optimizing Management of Patients with Metal-on-metal Hips," featured seven orthopaedic experts discussing the identification and treatment of MoM hip failure.

In December 2012, the Academy issued an Information Statement on Metal-on-metal Hip Arthroplasty (replacement) recommending a "low threshold" for commencing the evaluation of a patient with an MoM hip replacement, as "early recognition and diagnosis will facilitate the initiation of appropriate treatment prior to significant adverse biological reactions." The statement also provides a detailed overview of various diagnostic and treatment methods to limit patient discomfort, and outlines when to quickly initiate treatment, and if necessary revision.


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Contact: Lauren Pearson Riley
pearson@aaos.org
708-227-1773
American Academy of Orthopaedic Surgeons
Source:Eurekalert

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