Correlation Between Height Recovery Rate Of Vertebral Body Leading Edge And Adjacent Vertebral Body Fracture After PVP Operation

Purpose:We found some related factors with adjacent vertebral fracture through retrospective study of the osteoporotic vertebral compression fractures(osteoporotic vertebral compression fracture,OVCF)with percutaneous vertebroplasty(percutaneous vertebroplasty,PVP)in the subject.Methods:The sample of retrospective selection comes from 602 patients with only one single OVCF in 1619 patients with PVP surgery in Jining Medical college Affiliated Hospital and it's another hospital in Zouheng of 2015.01 to 2018.05.The sample was divided into re-fracture group and the control group according to the adjacent vertebral fracture or not.We record the patient's age,gender,height,weight,BMI,bone cement leakage,bone cement quantity,whether had any anti osteoporosis treatment,postoperative VAS score,the Vertebral segment section with damage and the rate of anterior height recovery of the two groups.All patient data were collected and sorted out by the same physician,and the PVP surgery of all patients was completed strictly in accordance with the same operation specifications by the unified trained physician team members of the research group.The recovery rate of the anterior vertebral body height was all measured by pre-operative and postoperative X-ray lateral radiographs of the thoracolumbar spine,and SPSS22.0 statistical software was used only for statistical analysis of the data.Results:About 368 cases of patients with complete follow-up data of a total of 602 cases were followed up for 6~ 24 months,the average(17.31±8.40)months.All patients completed the operation successfully and the postoperative pain score was significantly alleviated.35patients(9.51%)suffered from adjacent vertebral body fracture after PVP.21 patients(60%)among them suffered from adjacent vertebral body fracture in the lumbar vertebra,and 15patients(71%)suffered from the L1 vertebral body fracture,and the remaining 6 patients(29%)suffered from the L2 vertebral body fracture.In 14 patients(40%),recurrent fracturesof adjacent vertebral bodies occurred in the thoracic vertebra;in 13 patients(93%),recurrent fractures occurred in the vertebral body of T12,and in one patient(7%),recurrent fractures occurred in the vertebral body of T9.In terms of gender,height,weight,BMI,bone cement volume and primary vertebral body segment,there was no significant differences between the re-fracture group and the control group(P > 0.05).There were statistically significant differences in age and Cobb angle changes between the re-fracture group and the control group(P<0.05).The preoperative VAS score of PVP in the re-fracture group was(4.60±1.01),which was statistically significant compared with the postoperative VAS score(1.34±0.48)(P<0.05).The preoperative VAS score of PVP in the control group was(5.10 ±1.01),which was statistically significant compared with the postoperative VAS score(1.14± 0.34)(P<0.05).The differences between the average of anterior flange height recovery rate ofre-injured vertebral fracture group(0.18±0.10)and the control group(0.13 ±0.05)are statistically significant(P < 0.05).Conclusion:There was a correlation between the height recovery rate of the anterior border of the vertebral body and the vertebral body PVP after thoracic and lumbar OVCF.