Transplantation of deproteined bovine cancellous bone combined with autogenous red marrow for repairing bony cavity defect due to benign bone tumor: Compared with autologous bone graft / 中国组织工程研究

ABSTRACT

BACKGROUND: Autologous bone graft was always applied to repair bony cavity defect produced by benign bone tumor.OBJECTIVE: Taking autogenous bone graft for repairing bony cavity defect caused by bone tumor or tumor-like pathological change as control standard, to observe transplantation of deproteined bovine cancellous bone combined with autogenous red marrow in occluding the residual cavity and the density of newly formed bone.DESIGN: A randomized grouping design, controlled observation SETTING: Department of Orthopaedics, the 175 Hospital of Chinese PLA PARTICIPANTS:We recruited 175 cases of bony cavity defect who received treatment in the Department of Orthopaedics, the 175 Hospital of Chinese PLA from July 1993 to July 1998. They were randomly assigned into two groups experimental group and control group. There were 63 cases treated in the experimental group. The average disease-suffering time was (6.2±2.1) months and bone defect was (136±30) mm3. There were 62 cases treated in the control group. The average disease-suffering time was (6.1±2.3)months, and bone defect was (133±37) mm3.METHODS: Deproteined bovine cancellous bone combined with autogenous red marrow was transplanted in the experimental group and autologous bone graft was applied in the control group. We curetted tumor completely, cauterized the wound with alcohol of 0.95 volume fraction, then curetted the area of cauterization to make it bled. Bone graft was applied.The quantity of implanted bone should be abundant, and disposed compactly. The X-ray films of the first week after operation were used as a standard for density of new bone growth. X-ray films were taken at the 3rd,6th and 8th months postoperatively, and the X-ray films of the eighth months after operation were used as a standard.MAIN OUTCOME MEASURES: To compare the bone union in two groups with a standard of residual cavity occluding and density of bone growth.RESULTS: All patients were followed up for an average of 20 months.One case was lost six months after operation. And two cases were lost eighteen months after operation respectively in the experimental group and control group. After 8 months of operation, residual cavities of bone defect of 44 cases in experimental group and 46 cases in control group were disappeared. Palingenetic bone fused with left bone organization. Its density was the same as or higher than normal bone organization. Residual cavities of 12 cases in experimental group and 10 cases in control group were disappeared basically. The density of palingenetic bone was approximate to normal bone organization. To compare with autologous bone graft, deproteined bovine cancellous bone and an autogenous red marrow had an identical effect for repairing bony cavity defect.CONCLUSION: Bony cavity defect produced by benign bone tumor is often repaired by bone transplantation. To explore the substitutable grafting materials of autogenous bone in this study, a composite material composed of deproteined bovine cancellous bone and an autogenous red marrow (DBCAM) is applied to repair the bony cavity defect.