Fig. 2

Network plots of comparison-based network meta-analyses. Each circular node represents a type of intervention. The circle size is proportional to the total number of patients. The width of the lines is proportional to the number of studies performing head-to-head comparisons in the same study. a ONFH progression and b conversion to total hip arthroplasty (THA). ABG: autologous bone grafting; ABG + BMAC: autologous bone grafting and bone marrow aspirate concentrate; BMAC: bone marrow aspirate concentration; CD: core decompression; FVBG: free vascular vascularized bone grafting; MSCs: mesenchymal stem cells; PRP: platelet-rich plasma