Fig. 4

Radial plots visualizing the occurrence of bone marrow edema (“Bone Marrow Edema profile”), joint fluid (“Effusion profile”) and malleolar groove shape (“Malleolar groove profile”) in each group compared to the other. The axis unit is the proportion of feature occurrence in relation to the total number of cases in each group, expressed as a decimal. Overlap indicates similarity. Coding of bone sections and joint fluid as described in Sect. 2.6