Fig. 2

DLM diagnostic criteria and procedure for measuring the PCL attachment sacrifice percentage at different osteotomy slopes. a Diagnostic criteria of DLM: LMW% = L1 / L2*100%; b The first step was to define the osteotomy plane on the coronal slice; c The second step was to define the osteotomy plane at a 0° slope on the central sagittal slice; d Measuring the length of PCL attachment and the length of PCL attachment sacrificed at three osteotomy slopes. DLM = discoid lateral meniscus, LMW% = the percentage of the minimum meniscus width to the maximum tibia width, L1 = the minimum meniscus width, L2 = the maximum tibia width