Application of percutaneous vertebroplasty and percutaneous kyphoplasty in treating Kümmell's patients with different stages and postural correction status.

Objectives: To compare the effects of percutaneous vertebroplasty (PVP) or percutaneous kyphoplasty (PKP) in treating Kummell's disease (KD) patients. Methods: This prospective cohort study involved 19 KD patients (20 involved vertebrae). The surgical selection was dependent on clinical stages and postural correction status. The status of vertebral reduction, amount of cement injection, and amount of cement leakage during the surgery were recorded. The anterior vertebral height and kyphotic angle were measured by X-ray scan. The degree of low back pain and the quality of life were assessed by the visual analog scale and Oswestry disability index, respectively. Results: On the third-day post-operation and the last follow-up, anterior vertebral height was increased, kyphosis angle was reduced, low back pain was relieved, and life quality was improved in both groups compared with pre-operation. There was no significant difference between the two groups in cement amount, cement leakage rate, vertebral height correction, and kyphotic correction angle. The nerve function of stage III patients with spinal cord injury was improved from a Frankel grade D to E. Expert Opinion: PVP and PKP could be used in treating KD patients, and the surgical selection could be dependent on the clinical stages and status of postural correction. Conclusion: PVP and PKP could be used in treating KD patients, and the surgical selection could be dependent on the clinical stages and status of postural correction.