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. Author manuscript; available in PMC: 2019 Jul 1.
Published in final edited form as: Osteoarthritis Cartilage. 2018 Feb 7;26(7):912–919. doi: 10.1016/j.joca.2017.11.017

Figure 2.

Figure 2

Examples of meniscal extrusion. Left side image: Coronal STIR image shows grade 0 extrusion of the medial meniscus, which appears aligned to the medial tibial plateau (line). Center image: Example illustrates grade 1 meniscal extrusion (arrows) as seen on coronal STIR image with less than 50% of meniscal body extrusion beyond the tibial plateau (line indicates grade 0 extrusion, i.e. alignment with tibial plateau). Right side image: Grade 2 extrusion (of more than 50% of meniscal body extrusion) is shown in this example (arrowheads). Line indicates alignment with tibial plateau as it would be seen in grade 0 extrusion.