Sagittal intermediate-weighted fast spin echo images (TR 3200 ms, TE 30 ms) at baseline (a) and at 48 months (b) show an incident effusion. A finding was considered incident if it was absent at baseline, but present at 48 months. Coronal intermediate-weighted fast spin echo images (TR 3,700 ms, TE 29 ms) at baseline (c) and at 48 months (d) show an incident medial meniscal flap tear (arrow). The medial meniscus body WORMS score was 0 at baseline and 4 at 48 months. Sagittal intermediate-weighted fast spin echo images (TR 3200 ms, TE 30 ms) at baseline (e) and at 48 months (f) show a progressive patellar cartilage lesion. The patellar cartilage WORMS score was 3 (partial thickness cartilage loss) at baseline and was 5 at 48 months with incident full thickness defects (arrow)