Pedicle Screw Fixation Combined with Vertebroplasty to Treat Stage Ⅲ Kummell Disease

Abstract：Objective To evaluate the efficacy and safety of pedicle screw fixation combined with vertebroplasty to treat osteoporotic vertebral fracture nonunion with cord compression(Kummell disease stage Ⅲ). Methods A retrospective study was conducted in 13 cases with stage Ⅲ Kummell disease from March 2012 to June 2014. There were 5 males and 8 females, with the mean age of 72. 6 years(range,61 ~ 82 years). Frankel function classification was 3 C、7 D、3 E. All cases received radiography,CT and MRI examination. All the patients received manual reduction,shortsegment fixation and vertebroplasty. The visual analogue scale(VAS),Oswestry disability index(ODI),and the height and kyphotic angle of involved vertebral body were measured to evaluate clinical outcomes before and after surgery. Results All patients tolerated the procedure well. The operation time was(80 ± 16)min,blood loss was(110 ± 30)mL,hospitalization was(6. 1 ± 2. 2)days. No severe complica-tions were found in all patients. The patients were followed up for 15. 6 months(range,6 ~ 24 months). The VAS and ODI scores,the mean injured vertebral height and the Cobb angle were improved significantly after surgery(P < 0. 05). The Frankel class was 11E2D at final follow-up. The patients got satisfactory low back function and improved the quality of life. Conclusion In combination with manual reduction,pedicle screw fixation with vertebroplasty is an effective and safe method for stage ⅢKummell disease.