Viper system and pedicle screw fixation for treating thoracolumbar compression fractures

doi:10.3969/j.issn.2095-4344.2016.44.007

Abstract

Abstract:

BACKGROUND: Thoracolumbar spine as highly concentrated stress, often prone to vertebral fractures. With the further development of the biomechanics and anatomical structure of the spine, posterior open reduction and internal fixation with pedicle screw has been widely accepted by clinicians.

OBJECTIVE: To explore the clinical results and safety of percutaneous pedicle screw fixation system (Viper system) used in thoracolumbar compression fractures.

METHODS: We retrospectively analyzed 40 patients with thoracolumbar compression fractures from Department of Orthopedics, Changzhou Traditional Chinese Medicine Hospital and Nanjing General Hospital of Nanjing Military Area Command of Chinese PLA from January 2013 to February 2014. According to the type of graft, patients were randomly divided into experiment group and control group, with 20 patients in each group. They were respectively subjected to Viper percutaneous pedicle screw fixation system and open reduction and pedicle screw fixation.

RESULTS AND CONCLUSION: All vertebra got bone unions. Operative time and time to bone union were shorter in the experiment group than in the control group. Moreover, intraoperative blood loss was less in the experiment group than in the control group. Cobb’s angle, height percentage of leading edge and wedge angle were similar between the two groups. However, at 12 months after internal fixation, height percentage of leading edge was lower in the experiment group than in the control group. Visual Analogue Scale scores and Oswestry Disability Index were noticeably improved after fixation in both groups. Visual Analogue Scale scores and Oswestry Disability Index were lower in the experiment group than in the control group immediately after fixation. These results suggest that compared with open reduction and pedicle screw fixation, Viper percutaneous pedicle screw fixation system for thoracolumbar compression fractures can stably restore the structure and function of spine, and does not increase perioperative complications.

中国组织工程研究杂志出版内容重点：人工关节；骨植入物；脊柱；骨折；内固定；数字化骨科；组织工程

Key words: Internal Fixators, Fractures, Compression, Tissue Engineering

CLC Number:

R318

Xu Jian-da, Gao Yi, Zhao Hong, Peng Li-bo, Zheng Chong, Wang Bin, Qu Yu-xing, Zhao Jian-ning. Viper system and pedicle screw fixation for treating thoracolumbar compression fractures[J]. Chinese Journal of Tissue Engineering Research, 2016, 20(44): 6583-6589.

Figures/Tables 4

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