RTS versus SEXTANT percutaneous pedicle screw fixation for unstable thoracolumbar fractures under minimally invasive technology: recovery of the height of the vertebral body

doi:10.3969/j.issn.2095-4344.2016.22.009

Abstract

Abstract:

BACKGROUND: In recent years, with the development of minimally invasive techniques, the application of percutaneous pedicle screw fixation techniques gradually become widespread, but in the percutaneous pedicle screw fixation for thoracolumbar fractures, due to lack of reduction apparatus or power defect, the reduction of the injured vertebra is poor. In order to improve this deficiency, we design a percutaneous pedicle screw system in order to achieve the desired effect of reduction.

OBJECTIVE: To investigate the two different effects for treating unstable thoracolumbar fractures by fixing RTS (rotation softened trauma fixation system) or SEXTANT screws under minimally invasive technology.

METHODS: From October 2011 to June 2013, 50 patients who suffered from single-segment thoracolumbar fractures without any nerve-injured symptoms were treated by using percutaneous pedicle screws. Among them, 25 cases used Sextant screws; the others used RTS screws. Data were compared between the two groups, including the height of injured vertebrae, Cobb’s angle, visual analogue scale scores and Oswestry disability index 1 week, 3 and 6 months postoperatively, and during final follow-up.

RESULTS AND CONCLUSION: (1) All patients were followed up for 8-18 months. (2) The height of injured vertebrae and Cobb’s angle were restored in both groups, showing significant differences (P < 0.01). The restoration of the height of injured vertebrae and Cobb’s angle was better in the RTS group than in the SEXTANT group after treatment (P < 0.05-0.01). (3) The visual analogue scale scores and Oswestry disability index were significantly better in the RTS group than in the SEXTANT group 6 months postoperatively and during final follow-up (P < 0.05). (4) These results suggest that both RTS and SEXTANT systems can effectively repair single-segment thoracolumbar fractures without any nerve-injured symptoms. However, it is clear that the recovery of the height of the vertebral body is more satisfied and the postoperative pain and dysfunction were more minor in the RTS group.
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: Thoracic Vertebrae, Lumbar Vertebrae, Spinal Fractures, Internal Fixators, Follow-Up Studies, Tissue Engineering

CLC Number:

R318

Zhao Gang, Zhou Ying-jie, Wang Xu-ke. RTS versus SEXTANT percutaneous pedicle screw fixation for unstable thoracolumbar fractures under minimally invasive technology: recovery of the height of the vertebral body[J]. Chinese Journal of Tissue Engineering Research, 2016, 20(22): 3255-3262.

Figures/Tables 5

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