Fig. 1From: Correlation between meniscal extrusion and symptom duration, alignment, and arthritic changes in medial meniscus posterior root tear: research articleMeasure the length between the vertical line (a) and the line (b), which represents the outer edge of the meniscus, in the medial side of the tibial proximal articular surface in the coronal plane magnetic resonance imaging, femoral medial condyle mid cut imageBack to article page