Kevin M Koch1, Matthew F Koff2, Parina Shah2, S S Kaushik1, Andrew Nencka1, and Hollis G Potter2
1Radiology, Medical College of Wisconsin, Milwaukee, WI, United States, 2Magnetic Resonance Imaging, Hospital for Special Surgery, New York, NY, United States
The failure of hip arthroplasty may be attributed to
metallic or polyethylene debris generated from implant components. The metallic components, and their associated
debris are composed of cobalt-chromium alloys, which have a strong paramagnetic
magnetic susceptibility relative to biological materials. Previously, we demonstrated a mechanism to
utilize MRI data to qualitatively highlight cobalt-chromium debris deposits in
vivo. In the current study, we extend
this work to provide a quantifiable regional metallosis metric. In addition, this regional quantitative
metric is shown to statistically correlate with local histology metallosis
scores in subjects undergoing total hip revision surgery.
