Fig. 7
From: Degenerative changes through MR cartilage mapping in anterior cruciate ligament-reconstructed knees
A 32-year-old male patient underwent ACL reconstruction and medial meniscectomy 6 years ago, the patient complained of knee pain and swelling. In assessment of the MRI knee, the conventional images shows evidence of medial meniscectomy and mild knee joint effusion with interstitial tearing of the ACL graft. Sagittal T2 image (A) along the medial femoral condyle posterior segment shows mild thinning of the articular cartilage. On the post processing T2 mapping image: (C, D) The colour image along the articular cartilage of the medial femoral condyle posterior segment revealed internal areas of faint blue colour within the deep layer (red arrows) with increased T2 value (as demonstrated within the curve image (B)) that corresponds to articular cartilage degeneration. According to the international cartilage Repair Society (ICRS) grading system, this corresponds to grade II cartilage degeneration. Sagittal STIR image (E) at intercondylar notch level revealed intra-substance linear streaks of bright signals within the anterior cruciate ligament graft that goes with interstitial tear (White arrows)