Abstract #4211
MRI evaluation of the polyethylene tibial insert in total knee arthroplasty
Angela E Li 1 , Darryl B Sneag 1,2 , Alissa J Burge 1,2 , Shari T Jawetz 1,2 , Joseph D Lipman 3 , and Hollis G Potter 1,2
1
Radiology, Hospital for Special Surgery, New
York, NY, United States,
2
Weill
Cornell Medical College, New York, NY, United States,
3
Biomechanics,
Hospital for Special Surgery, New York, NY, United
States
Radiographs have been traditionally used to evaluate the
polyethylene tibial insert in total knee arthroplasty,
although assessment is limited. With the development of
MRI and metal reduction techniques, the polyethylene
tibial insert can be visualized. We review the MRI
scanning considerations to optimize evaluation of the
prosthesis. The expected MRI appearance of polyethylene
tibial inserts will be correlated with corresponding
macroscopic photographs of common total knee
arthroplasty designs. Complications related to the
polyethylene liner including polyethylene wear, fracture
of the polyethylene liner, or dissociation of the
polyethylene component or tibial locking pin will also
be discussed.
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