Study On The Relationship Between MRI Image And Clinical Outcome After Percutaneous Vertebroplasty

BACKGROUND AND PURPOSE: Objective to observe the magnetic resonance imaging(MRI)features of the vertebral body after percutaneous vertebroplasty(PVP)and to investigate the relationship between the MRI findings and the clinical outcomes.METHODS: A retrospective analysis of the clinical data of 198 cases of 2015.1-2016.1 in our hospital underwent vertebroplasty in patients,the data integrity and met the inclusion criteria were 108 cases(152 vertebral),analysis of age,gender,bone cement injection volume,preoperative and postoperative X-ray images of 1 days,before and after operation.In March June,the follow-up of MRI imaging results(vertebral height,bone marrow edema)and before surgery,postoperative 1 days,March,after June the pain visual analogue scale(VAS),and focus on the collection,analysis,observation of clinical manifestations of patients after surgery.RESULTS:The preoperative and postoperative 1days VAS were 6.7 ± 1.4 and 2.1 ± 0.7 respectively,the difference was statistically significant(P<0.05),the postoperative in March and the postoperative VAS were 1.7±0.8and 1.2±0.6 respectively.The height of the vertebral body was increased by 2.4±1.8mm compared with that before the operation.The height of the vertebral body was lost 0.8±0.5 after the operation in June,and the data of the patient and the amount of cement injected into the vertebral body were not related to the loss of vertebral height after PVP.28 of them(18%)had vertebral height loss postoperatively.62% of the vertebral body underwent preoperative MRI images and 33% vertebral body follow ups,and the MRI images showed moderate or severe bone marrow edema in the vertebral body.21% of the vertebral bodies presented a new area of bone marrow edema at the time of follow-up.Moderate or severe bone marrow edema occurred in 22% of the MRI images at 6 months after surgery.CONCLUSION:PVP in the treatment of osteoporotic vertebral compression fractures(OVCF)curative effect,progressive and persistent marrow edema and loss of vertebral height is common after PVP,should not be regarded as sufficient evidence of abnormal postoperative vertebral surgery.