A primary report about animal experiment study to treat the osteonecrosis of the femoral head with bone marrow mesenchymal stem cell transplantation and umbrella strut bone grafting

Abstract

Objective To study the usefulness to treat the osteonecrosis of the femoral head (ONFH) with bone marrow mesenchymal stem cell transplantation and umbrella strut bone grafting. Methods Six goats were established of osteonecrosis of the femoral head models on one side by method of liquid nitrogen frozen, and then they were taken into bone marrow mesenchymal stem cell transplantation and umbrella strut bone grafting after 8 weeks. The radiological examination was made at 3 and 6 months after the bong grafting, and observed changes of bone union in the femoral head. Results The general state of the experimental animal was fine after the operation. The model of ONFH was reached on 8 weeks after liquid nitrogen frozen, and limping. After 3 months of bone marrow mesenchymal stem cell transplantation and umbrella strut bone grafting, X-ray film showed that low bone density disappeared, the shape of the femoral heads, grafting strut bone and initial bone union were fine in the head, and no repeated collapse of the head. The X-ray film showed that the shape of the femoral heads was normal, grafting strut bone was union in the head, and no repeated collapse of the head after 6 months. There was normal on the control side. Conclusions The ONFH can be treated effectively by bone marrow mesenchymal stem cell transplantation and umbrella strut bone grafting, and the collapse of the femoral head is prevented. Key words: Bone mesenchymal stem cell ; Umbrella strutting ; Bone grafting ; Osteonecrosis of the femoral head ; Liquid nitrogen frozen ;