Kyphoplasty versus percutaneous vertebroplasty using the traditional and the new side-opening cannula for osteoporotic vertebral fracture

摘要

Aim. The aim of this article was to study the results of two different types of percutaneous vertebroplasty (PV) and kyphoplasty (KPs) to osteoporotic vertebral fractures (OVF). Methods. It was prospectively analyzed a series of 47 PVs from January 2003 to February 2008, and a consecutive series 30 KPs from March 2008 to January 2010, performed for patients with painful OVFs. Twenty-five PVs were performed using the frontal-opening cannula (FOC) and 22 using the new side-opening cannula (SOC), randomly distributed in the PV group. Results. The incidence of cement extrusion was 16.7% with KP, comparing with PV, it was 27.3% using the SOC (P<0.05) and 68,0% with the FOC (P<0.05), but comparing SOC with FOC, the cement extrusion was significantly lower using the SOC (P<0.05), all asymptomatic. The pain control was similar for all groups (P<0.05), with good improvement of pain in most of the patients, and there were no clinical relevant complications. Conclusion. The cement leakage was significantly reduced with the KP (16.7%) and the SOC (27.3%) for PV, in comparison with the FOC (68.0%). The cement extrusion was slightly lower with KP, but not a significant difference, comparing with SOC, increasing the safety of the procedure using both the KP and this new SOC.