Fig. 4From: High validity of measuring the width and volume of medial meniscal extrusion three-dimensionally using an MRI-derived tibial modelVolume of the medial meniscal extrusion (MME) model. The medial meniscus (MM) is shown in gray color. a The MM (gray) and the medial tibial plateau model (blue). b The MM (gray) and the cross-sectional model of the medial tibial plateau (blue). c MME model (gray) and the thickened cross-sectional model. The MME volume is defined as the volume of the MM model outside the thickened cross-sectional modelBack to article page