Measuring Fixation in Cementless Total Knee Replacement Tibial Baseplates with RSA and MRI
Jordan Broberg1,2,3, Matthew Koff4, James Howard5, Brent Lanting5, Hollis Potter4, and Matthew Teeter1,2,3,5
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
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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