Autologous Bone Marrow Mesenchymal Stem Cells Associated with Tantalum Rod Implantation and Vascularized Iliac Grafting for the Treatment of End-Stage Osteonecrosis of the Femoral Head

Figure 4

To understand how our procedure outcome is after operation, we made a Kaplan-Meier survivorship curve with conversion to total hip arthroplasty as the end point. We set up the time point from 0 month to 80 months on the -axis. The -axis shows the survival rate. The blue longer-dotted line shows the survival rate of stage III hips while the green shorter-dotted line shows the survival rate for ARCO stage IV hips. Looking across all of the hips we can see that the joint-preserving success rate of the stage IIIc group was 89.47% 5 years postoperatively while 75% for IV hips and the performance of total hip arthroplasty may emerge during the postoperative 20 months to 60 months. Now we have demonstrated the effect of this technique for end-stage osteonecrosis of the femoral head. However, comparison with a larger group or a control group of patients is necessary to further confirm the effect of this technique.