The Effect of Vertebral Wedge Angle to the Change of Kyphotic Angle by the Posterior Instrumentation Method in Thoracolumbar Spine Fracture.
10.4184/jkss.2009.16.3.160
- Author:
Seok Kon KIM
1
;
Myung Ho KIM
;
Sung Churl LEE
;
Sang Hyuk MIN
;
Jin Won LEE
Author Information
1. Department of Orthopaedic Surgery, Dankook University College of Medicine, Cheonan, Korea. osmin71@naver.com
- Publication Type:Original Article
- Keywords:
Thoracolumbar spine;
Fracture;
Transpedicular screw fixation;
Vertebral wedge angle;
Kyphotic angle
- MeSH:
Humans;
Retrospective Studies;
Spine
- From:Journal of Korean Society of Spine Surgery
2009;16(3):160-166
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
STUDY DESIGN: Retrospective study OBJECTIVES: To examine the effect of transpedicular screw fixation on fractured vertebrae about the vertebral wedge angle (VWA) after posterior instrumentation of the thoracolumbar fracture, determine the effect of reduced VWA on the change in the Kyphotic angle (KA), and minimize loss of reduction of KA. SUMMARY OF THE LITERATURE REVIEW: Maintenance of the KA of a thoracolumbar fracture after surgery is important for the radiologic and functional outcome. MATERIALS AND METHODS: Forty patients, who had undergone posterior instrumentation in a thoracolumbar fracture between February 2006 and February 2008 and followed-up for more than one year, were enrolled in this study. The patients were divided into two groups according to transpedicular screw fixation (Group A) or not (Group B) including fractured vertebrae. The evaluation was performed by measuring the changes in the KA and VWA taken after the injury, immediate after surgery and 1 year after surgery. RESULTS: There was correlation between groups A (transpedicular screw fixation on fractured vertebrae) and B (no transpedicular screw fixation on the fractured vertebrae) regarding the correction of the VWA and the loss of correction KA, (p<0.05). CONCLUSIONS: Reduction of the VWA is an important factor for preventing reduction loss of the KA, and transpedicular screw fixation including fractured vertebrae would help reduce the VWA. Therefore, the operator must pay attention to the increase in VWA to maintain the KA through short segment transpedicular screw fixation including fractured vertebrae.
