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Fig. 3 | BMC Musculoskeletal Disorders

Fig. 3

From: Extrusion of the medial meniscus is a potential predisposing factor for post-arthroscopy osteonecrosis of the knee

Fig. 3

The left graph (A) shows location of the MM on the joint line in the PAONK and Control groups, which were measured before and the meniscectomy (Preop and Postop). The right schematic picture (B) shows the definition of the Extrusion width (EW) and the Inner width (IW) and how to understand the left graph. This left graph shows that the disappearance of the IW of the MM in the PAONK group was caused by not only the decrease of the total meniscal width due to meniscectomy but also the meniscal extrusion

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