[Objective]To investigate the predictive value of diffusion weighted imaging(DWI)of MRI in recurrent fractures of the same vertebra after percutaneous vertebroplasty(PVP).[Methods]From January 2020 to June 2022,80 patients who received PVP treat-ment in Liaoyou Baoshihua Hospital of Panjin were included in the study,and were divided into the refracture group(the RF group)and the non-fracture group(the NF group)according to whether there was a refracture of the same vertebra after surgery.The risk factors of recur-rent fracture were analyzed by univariate comparison and multivariate logistic regression,the predictive efficacy of apparent diffusion coeffi-cient(ADC)in recurrent fracture was analyzed by ROC curve,and Pearson analysis was performed for the correlation.[Results]As follow-up period lasted for(18.0±4.0)months in a mean,24 cases(30.0％)proved refracture at the same vertebral body.As results of univariate comparison,the RF group had was significantly greater than the NF group in terms of bone mineral density T value[(-3.6±0.8)vs(-3.2±0.6),P=0.016],preoperative IVC ratio[yes/no,(9/15)vs(2/54),P＜0.001],fracture line involved end-plate ratio[yes/no,(13/11)vs(16/40),P=0.029],postoperative fluid accumulation around bone cement ratio[yes/no,(9/15)vs(4/52),P=0.002],vertebral height restoration rate[(10.5±2.5)％vs(6.5±2.2)％,P＜0.001]and ADC values[(1.8±0.5)10-3mm2/s vs(1.0±0.3)10-3mm2/s,P＜0.001].As for multivariate logistic analysis,the preoperative IVC(OR=8.864,P=0.005),ADC value(OR=3.241,P=0.024),vertebral height recovery rate(OR=2.746,P=0.012),postoperative fluid accumulation around bone cement(OR=2.261,P=0.029)were the independent risk factor for recurrent fracture of the same vertebra after surgery.The area under the curve(AUC)predicted by ADC values for recurrent fractures was 0.953.In addition,the ADC values were negatively correlated with bone mineral density(r=-0.335,P＜0.001),whereas positively correlated with vertebral height recovery(r=0.250,P＜0.001).[Conclusion]MRI-DWI has a certain predictive value for the recurrence of the same vertebral body fracture after PVP.By evaluating the risk factors such as DWI-ADC value and IVC value of MRI,it may be beneficial to prevent the recur-rence of fracture after PVP.
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