Analysis of Clinical Outcomes of Kummell Disease Treated with Percutaneous Kyphoplasty

Abstract：Objective To analyze the clinical outcomes of Kummell disease treated with percutaneous Kyphoplasty (PKP). Methods 72 cases diagnosed as Kummell disease were involved from 326 cases with chronic vertebral compression fractures treated in our hospital from April 2005 to June 2012. 70 cases were treated with percutaneous Kyphoplasty and 2 cases were treated with posterior pedicle screw fixation with bone cement as balloon failed to restore height. Anti-osteoporosis and other conventional treatment were used after the surgery. Curative effect evaluation assessment including comparing pro-and postoperation of vertebral body height,local sagittal Cobb Angle and visual analogue scale(VAS)pain,Oswesay disability in-dex(ODI). Results There were statistically significant difference of vertebral body height,local sagittal Cobb Angle and pain scoresand Oswesay disability index compared with pro - surgery . The vertebral body height restore from( 1 9 . 7 7 ± 4 . 4 2 )to (21. 47 ± 3. 71). The Cobb Angle improved from 15° ~ 25°[average(21. 2 ± 0. 5)°]to 3° ~ 14°[average(9. 1 ± 0. 6)°]. Postoperative VAS score was 1 ~ 4 points,with an average of 3. 2 ± 0. 4 points,have improved significantly compared with pre-operative(P ﹤ 0. 05). ODI improved from an average of(63. 7 ± 2. 3)preoperatively to the average of(43. 2 ± 1. 7)at the last follow-up. Intraoperative appeared bone cement leakage happened in 2 cases,including 1 case appeared adjacent vertebral frac-tures at follow-up. Conclusion It is critical to eliminate motion of vertebral fracture,provide sufficient biomechanical support and restore the stability of the spine in early stage for kummell disease. Minimally invasive surgical approach on patients of Kummell disease of PKP,which can provide a better vertebra reduction,and less complications.