Immediate Losing Of Balloon Reduction During Percutaneous Kyphoplasty For The Osteoportic Fracture Of The Thoracolum

Objective: To investigate the ballon restoration and its immediate losing inPKP after the osteoportic fracture of the thoracolumbar vertebrae,so as to evaluate thesignificance of the reduction technique for Osteoporotic vertebral compressionfractures.Methods: Analyzed36patients of Osteoporotic vertebral compression fracturesretrospectively. They are collected from April2012to June2013in our hospital.17of them were punctured in both sides with double balloon,12of them were puncturedin both sides with single balloon,and7of them were punctured in single side withsingle balloon. Measured the cobb angle, Gardner angle before operation, afterballon restoration and solidification of the respectively. Furthermore, the VAS andODI should be assessed, one day before and after the surgery, by doctors who arenot participated in the surgery. The contents of the ODI includes the degree of thepain,the ability to take care of himself,each question contains six options, the firstoption stands for0score, the last option stands for5scores, A higher score means thedysfunction is more serious.Results: The percentage of the average value of fractured vertebra anterior heightoccupying upper and lower adjacent anterior height before operation, at the time ofballoon dilation and bone cement injection are65.63%±6.12%,73.39%±5.89%and68.94%±6.03%respectively; the percentage of the average value of fractured vertebramedium height occupying upper and lower adjacent medium height before operation,at the time of balloon dilation and bone cement injection are68.97%±5.02%、75.33%±5.77%and70.03%±6.50%respectively; the Cobb angles before operation, atthe time of balloon dilation and bone cement injection are15.72°±3.33°, 11.89°±3.08°and14.81°±3.31°respectively; the Gardner angles before operation, atthe time of balloon dilation and bone cement injection are17.25°±3.77°,12.58°±3.07°and14.33°±3.30°respectively, the differences have statisticalsignificance (P<0.05). The VAS, ODI grades1day before operation and afteroperation are separately8.3±1.3,2.2±1.2；41.0±4.6,15.0±4.5, and the differences alsohave statistical significance (P<0.05).Conclusion: The immediate losing after the ballon restoration in PKP for theosteoportic fracture of the thoracolumbar vertebrae exist extensively, the percentageof which is about80%.It has no influence on curative effect at the early stage, but itsimpact on the long-term effect may be larger. The long-term, large sample size andmulti-center prospective case-control study,which is aimed at studying the long-termeffect, should be carried out to explore better vertebral reduction technique andvertebroplasty methods.