ObjectiveTo investigate the clinical efficacy of balloon multipoint dilatation percutaneous kyphoplasty(PKP)in the treatment of osteoporotic vertebral compression fractures(OVCF).

MethodsThe clinical data of 84 patients with OVCF were retrospectively analyzed.Forty-four patients treated with balloon multipoint dilatation PKP and 40 patients treated with single balloon dilation PKP were divided into the multipoint dilatation group and single dilatation group, respectively.The perioperative indicators, Cobb angle of before surgery, day after surgery and last follow-up, anterior vertebral height ratio, visual analogue scale(VAS)score, and postoperative complications were compared between two groups.

ResultsThe differences of the hospitalization time and radiation exposure time between two groups were not statistically significant(P>0.05), and the differences of the operation time and bone cement injection volume in multipoint dilatation group were higher than those in single dilatation group(P < 0.01).On the day after operation and at the last follow-up, the Cobb angle and VAS score in two groups were lower than those before operation, and the anterior vertebral height ratio was higher than that before operation(P < 0.05 to P < 0.01).At the last follow-up, the Cobb angle in multipoint dilatation group was lower than that in single dilatation group, and the anterior vertebral height ratio in multipoint dilatation group was higher than that in single dilatation group(P < 0.01).There was no statistical significe in postoperative complications between two groups(P>0.05).

ConclusionsThe balloon multipoint dilatation PKP treating OVCF can increase the amount of bone cement perfusion, and reduce the long-term loss of vertebral height and Cobb angle.