Fig. 2

Progression of meniscal damage and incident cartilage loss over 24 months. a Baseline coronal intermediate-weighted image shows horizontal-oblique tear of the body of the medial meniscus (arrow). There is no apparent cartilage damage at the tibia or femur at the medial compartment. b Follow-up image obtained 24 months later shows marked incident meniscal extrusion (black-filled arrow) and newly developed cartilage loss at the central portion of the medial tibia (white-filled arrow)