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Fig. 3. —Grade 3 cartilage lesion. Axial image acquired with
multiple-echo data image combination (MEDIC) sequence (TR/TE, 884/26; flip
angle, 30°) shows arthroscopically proven grade 3 cartilage lesion
(arrow) in left knee of 49-year-old man. Fissuring to level of
subchondral bone in medial facet of retropatellar cartilage is present.
