Abstract #2403

Measuring Fixation in Cementless Total Knee Replacement Tibial Baseplates with RSA and MRI

Jordan Broberg^1,2,3, Matthew Koff⁴, James Howard⁵, Brent Lanting⁵, Hollis Potter⁴, and Matthew Teeter^1,2,3,5

¹Medical Biophysics, Western University, London, ON, Canada, ²Robarts Research Institute, London, ON, Canada, ³Lawson Health Research Institute, London, ON, Canada, ⁴Radiology and Imaging, Hospital for Special Surgery, New York, NY, United States, ⁵Surgery, Western University, London, ON, Canada

Synopsis

This prospective evaluation of cementless total knee replacement tibial baseplate fixation using RSA and MRI at paired time points identified a stabilization of migration and mostly normal integration of the bone-implant interface by 3 months post-operation. A potential relationship between RSA migration magnitude and the evaluated bone-implant interface supports the use of MRI as a tool for evaluating implant fixation.

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