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Fat-saturated proton-density-weighted images in the coronal scan (a) and proton-density-weighted sagittal (b) scan showed a defect in the medial meniscus posterior horn root. A medial extrusion of the meniscus and high-grade chondral lesions due to osteoarthritis are noted. A proton-density-weighted sagittal scan at a different level (c) showed an ACL that was intact.
