COMPARATIVE STUDY OF BONE GRAFT BED FUSION RATE BETWEEN GRINDING DRILL AND OSTEOTOME IN TREATMENT OF THORACOLUMBAR BURST FRACTURE

Abstract

Objective: To explore the effect of grinding drill and bone knife treatment on patients with thoracolumbar burst fractures and its impact on the fusion rate of bone grafting bed. Method: 90 patients with thoracolumbar burst fractures from August 2020 to April 2022 were selected and divided into two groups based on different bone grafting bed treatments. Both groups underwent surgical treatment. The control group had 46 cases treated with high-speed grinding and polishing of the bone graft bed, while the observation group had 44 cases treated with a bone knife. The patient's effectiveness was evaluated 7 days after surgery in both groups, and 12 months of outpatient follow-up were completed to compare the loss degree of Cobb angle and Cobb angle of the injured vertebrae, the fusion rate of 3D CT reconstruction, and the incidence of postoperative complications between the two groups. Result: There was no statistical difference in the degree of Cobb angle loss between the two groups at 12 months after surgery (P>0.05); The degree of Cobb angle loss in the observation group at 1 day and 6 months after surgery was lower than that in the control group (P<0.05); The coincidence rate of 3D CT reconstruction in the observation group at 6 months and 1 year after surgery was higher than that in the control group (P<0.05); There was no statistical difference in the incidence of postoperative incision infection, internal fixation detachment, secondary nerve injury, internal fixation rupture, and cerebrospinal fluid leakage between the two groups (P>0.05). Conclusion: The use of bone knife treated bone grafting bed in patients with thoracolumbar burst fractures can increase the Cobb angle of the injured vertebra, reduce the degree of Cobb angle loss, and improve the fusion rate of CT three-dimensional reconstruction. However, this method has a higher risk of spinal cord nerve injury; However, the high temperature of the grinding drill can lead to partial bone grafting in patients, which affects the fusion rate of the bone graft.