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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 1.

Figure 1

Examples of different grades of meniscal damage in using the Whole-Organ Magnetic Imaging Score scoring system. Left side image: A Grade 1-lesion is defined as a minor or parrot-beak tear as shown in this sagittal intermediate- weighted fat suppressed image. Image depicts a horizontal-oblique tear of the posterior horn of the medial meniscus opening to the meniscal undersurface (arrow). Center image: A grade 2 lesion is defined as a non-displaced tear as shown in this example. There is a linear hyper intensity in the medial posterior horn opening to the meniscal undersurface and the posterior meniscal basis (arrows). Right side image: Grade 3 meniscal damage is defined as a displaced tear or partial maceration or destruction as shown in this image. There is partial maceration of the medial posterior horn with missing meniscal substance of the free edge (short arrow). There is only a remnant of normal meniscal substance observed posteriorly (long arrow). Grade 4 meniscal damage is defined as complete maceration or destruction and is not shown.