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Abstract #1427

A Prospective, Longitudinal Assessment of Adverse Local Tissue Reactions in Resurfacing Hip Arthroplasty Versus Primary Total Hip Arthroplasty in Asymptomatic Subjects

Matthew F. Koff1, Mauro Miranda1, Jacky Cheung1, Kelly Zochowski1, Bin Lin1, Edwin Su1, Douglas Padgett1, and Hollis G. Potter1

1Hospital for Special Surgery, New York, NY, United States

This prospective study compares the prevalence of MRI detected adverse local tissue reactions (ALTRs) in metal-on-polyethylene (MoP), metal-on-metal hip resurfacing arthroplasty (HRA), and ceramic-on-polyethylene (CoP) total hip arthroplasty subjects. Images acquired at four time points with a 1-year interval showed a higher prevalence of ALTRs in the HRA than CoP or MoP subjects. Self-assessed symptomatology scores did not significantly differ by implant type at follow-up, indicating that ATLRs can be clinically silent. This study permits better understanding of the natural history of ALTRs complicating hip arthroplasty.

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