A Comparison Between PVP And PKP In Osteoporosis Fracture Of The Vertebral

Objective:There are few comparative studies regarding morphologic changes after kyphoplasty and vertebroplasty. The purpose of this study was to compare restoration of vertebral body height and kyphotic angle and cement leakage with kyphoplasty and vertebroplasty in osteoporotic compression fracture, we tried to find which is safe, effective and economical operation to treat osteoporotic vertebral compression fractures.Materials and Methods:According to the criteria and principle,40patients was selected in Orthopaedics of The Second Clinical Affiliated Hospital of Shanxi medical University (from February2010to February2012), application of PVP or PKP treatment. And there are20cases with PVP treatment and20cases with PKP. Preoperative line X-ray and CT and MR check. We observed the change of height of anterior border and posterior border of veterbral body and kyphotic angle before and after operation, and observe the vertebral dish organization and the vein clearance organization such as bone cement leakage. Compare the difference of results between two groups index and bone cement leakage rate. Then, we did statistical analyses. Two groups of preoperative and postoperative vertebral body height and kyphotics angle of measurement results and analyzed with the T test and bone cement leakage rate with X2test, the result to P<0.05with a statistical significance.Results:PKP and PVP both improved vertebral body height and the kyphotic angles (P<0.01). However, these differences were not statistically significant when the2techniques were compared (P>0.05). Bone cement overall leakage rate, PVP is70%, PKP is25%.There were25%of the PVP group and10%of the PKP group that showed cement leakage into the disk space (P<0.05). Cement leakage into the paravertebral soft tissues or veins occurred in45%of the PVP group and in15%of the PKP group (P<0.05). However, no complications related to cement leakage were noted.Conclusions:Both PKP and PVP achieved the same degree of height restoration and improvement of the Kyphotic angle. PKP resulted in less cement leakage into the disk space and paravertebral soft tissues or veins than PVP.