Biomechanical changes of spine after thoracolumbar fracture and dislocation treated with pedicle screw internal fixation

doi:10.3969/j.issn.2095-4344.2014.13.015

Abstract

Abstract:

BACKGROUND: Anterior decompression, bone graft fusion, plate and screw fixation are commonly used in clinic for the treatment of thoracolumbar burst or comminuted fractures. The posterior surgery including decompression laminectomy and pedicle screw internal fixation.
OBJECTIVE: To explore the biomechanical changes of spine after thoracolumbar fracture and dislocation treated with pedicle screw internal fixation.
METHODS: Forty-six patients with thoracolumbar fracture and dislocation were treated with pedicle screw internal fixation, and then the recovery of spinal cord injury and fracture reduction were observed after internal fixation, immediately after internal fixation and 1-year follow-up.
RESULTS AND CONCLUSION: All the 46 cases were followed-up. Frankel function classification assessment was used to evaluate the spinal cord injury grade. There was no significant difference in the percentage of A grade between periods (P > 0.05), and there were significant differences in the percentage of B-E grades when compared between immediately postoperative period, 1-year follow-up period and preoperative period (P < 0.05), but there was no significant difference when compared between immediately postoperative period and 1-year-follow period (P > 0.05). The anterior height percentage, posterior height percentage and Cobb angle indicators were used to assess the fracture reduction, and the results showed there was no significant difference in posterior height between periods (P > 0.05), and there was significant difference in Cobb angle when compared between immediately postoperative period, 1-year follow-up period and preoperative period (P < 0.05), but there was no significant difference between immediately postoperative period and 1-year follow-up period (P > 0.05).
The results indicate that pedicle screw internal fixation system for the treatment of thoracolumbar spinal fracture and dislocation is conducive to the fracture reduction and functional recovery.

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

全文链接：

Key words: thoracic vertebrae, fractures, compression, fracture fixation, intramedullary, spinal cord injuries

CLC Number:

R318

Deng Hai-tao, Wang Qing. Biomechanical changes of spine after thoracolumbar fracture and dislocation treated with pedicle screw internal fixation[J]. Chinese Journal of Tissue Engineering Research, 2014, 18(13): 2055-2058.

Figures/Tables 1

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