Study Design: Retrospective comparative analysis.
Objective: We analyzed kyphosis correction, vertebral height restoration, and bone cement leakage in patients treated by vertebroplasty (VP) and kyphoplasty (KP) to compare the effectiveness of VP and KP for the treatment of osteoporotic vertebral compression fractures.
Summary of Background Data: Superior results have been reported for the use of KP for kyphotic deformity correction and collapsed vertebral height restoration. However, there are no previous comparative reports comparing the efficacy of KP versus VP according to the shapes of fractured vertebrae.
Methods: A total of 103 patients underwent either VP (n=58) or KP (n=45) for treatment of osteoporotic vertebral compression fracture between October 2006 and September 2009. We organized the patients into 6 groups according to treatment method and fracture type: VP (wedge-shaped), VP (V-shaped), VP (flat-shaped), KP (wedge-shaped), KP (V-shaped), and KP (flat-shaped). Comparisons were performed for kyphosis correction, vertebral height restoration, and cement leakage between VP and KP groups.
Results: KP was more effective than VP, especially for middle column height restoration and bone cement leakage prevention, for all fracture types (P value <0.05). In addition, KP was more effective in anterior height restoration and kyphosis correction in both flat and wedge-shape fractures (P value <0.05). However, posterior column vertebral height was not restored in either the KP group or the VP group. The clinical outcomes did not differ between the 2 groups (P value >0.05).
Conclusions: KP has a significant advantage over VP in terms of kyphosis correction, vertebral height restoration, and cement leakage prevention. KP has an obvious advantage in terms of middle vertebral height restoration and cement leakage prevention, especially for V-shape compression fractures.
Department of Neurosurgery, Gangnam Severance Spine Hospital, Spine and Spinal Cord Institute, Yonsei University College of Medicine, Seoul, Korea
This study was supported by a faculty research grant of Yonsei University College of Medicine for 2010 (No. 6-2010-0106).
The authors declare no conflict of interest.
Reprints: Sung-Uk Kuh, MD, PhD, Department of Neurosurgery, Gangnam Severance Spine Hospital, Yonsei University College of Medicine, 146-92, Dogok-dong, Gangnam-gu, Seoul 135-720, South Korea (e-mail: firstname.lastname@example.org).
Received November 5, 2010
Accepted May 16, 2011