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Abstract #2407

Infrapatellar Fat Pad T2 values Associated with Fat Pad Scarring Severity in Individuals with Total Knee Arthroplasty

Sara E. Sacher1, John P. Neri1, Madeleine A. Gao1, Hollis G. Potter1, and Matthew F. Koff1
1Department of Radiology, Hospital for Special Surgery, New York, NY, United States


The infrapatellar fat pad (IPFP) has been implicated as a source of pain after total knee arthroplasty (TKA), but regions close to metallic implants are susceptible to metal artifacts in MRI. Multi-acquisition variable-resonance image combination (MAVRIC) based T2 mapping technique can mitigate these artifacts. The goal of this study was to evaluate how T2 values of the IPFP vary with the degree of IPFP scarring. T2 values were shorter and displayed a wider range for individuals with more severe scarring. MAVRIC T2 mapping may be used as a quantitative biomarker of IPFP scarring.

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