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Fig. 1 T1-weighted coronal image of right knee at midpoint in 20-year-old
asymptomatic male athlete shows medial meniscal extrusion of 5.7 mm. Meniscal
extrusion is measured by distance from perpendicular line to edge of tibial
plateau and edge of meniscus (white lines). Vertical tear of medial
meniscus and sclerosis of subarticular medial tibial plateau with small
marginal osteophyte indicating degenerative change are present. No joint
effusion is shown.