Fig. 4From: Hip preserving surgery with concentrated autologous bone marrow aspirate transplantation for the treatment of asymptomatic osteonecrosis of the femoral head: retrospective review of clinical and radiological outcomes at 6 years postoperativelyComparison of femoral head collapse rates in ONFH of types C1 and C2. Data describes outcomes after concentrated autologous bone marrow aspirate transplantation (CABMAT; present study) and outcomes of the natural course of the disease (taken from references [14, 15]). ONFH, osteonecrosis of the femoral headBack to article page