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Sagittal fat-suppressed proton density-weighted image from MRI study of the right knee of a 43-year-old woman with a PHMM RL tear demonstrates ICRS Grade 3 chondral lesion of the medial FPFC. The white arrow shows an area of cartilage delamination with greater than 50% cartilage depth involving the medial FPFC consistent with an ICRS Grade 3 cartilage lesion.
