Bone Cement Augmentation of Pedicle Screw Fixation Combined with Kyphoplasty for Stage Ⅲ Kummell Disease

Abstract：Objective To evaluate the efficacy of bone cement augmentation of pedicle screw fixation combined with kyphoplasty for stage Ⅲ kummell disease.Methods Between August 2012 and August 2016,25 cases of stage Ⅲ kummell disease were treated by bone cement augmentation of pedicle screw fixation combined with kyphoplasty were included in this study.According to the follow-up results,such as the operation time,blood loss,postoperative drainage,hospitalization,ambulatory recovery,kyphosis Cobb's angle,visual analogue scale (VAS),Oswesay disability index (ODD,height restoration of the vertebral and complications were assessed.Results Patients were followed up for 22 to 28 months,mean 25 months;the operation time 150 to 190 min,mean(150±20)min;blood loss 400 to 550 mL,mean (450±30)mL;postoperative drainage 150 to 200 mL,mean(180±20)mL;hospitalization 10 to 15 days,mean(11.5±2.5) days;ambulatory recovery 5 to 7 days,mean (4.5 ± 1.5) days.Com pared with pre-operation,significant differences (P ＜0.05) were found in kyphosis Cobb's angle,visual analogue scale(VAS),oswesay disability index(ODD and height restoration of the vertebral after post-operation.One case appeared adjacent vertebral fractures at follow up.There were no complications such as fixation loosen and broken.Conclusion Bone cement augmentation of pedicle screw fixation combined with kyphoplasty for stage Ⅲ Kummell Disease,can effectively restore spinal sagittal alignment,avoid vertebral collapse,secondary nerve injury and long-term bed-ridden complications,improve quality of life.