https://youtu.be/im9FJXRg6Ho https://youtu.be/nKQsItyKAtM MRI Classification of Posterior Medial Meniscal Root Injuries: (AJR 2014; 203:1286–1292) Choi et al. introduced an MRI-based classification for posterior medial meniscal root lesions. This classification encompasses a range of MRI findings related to meniscus posterior root attachment issues, including degeneration, partial tears, and com..