Biomechanical changes of spine after thoracolumbar fracture and dislocation treated with pedicle screw internal fixation
10.3969/j.issn.2095-4344.2014.13.015
- VernacularTitle:椎弓根螺钉置入内固定治疗胸腰段骨折脱位后脊柱的生物力学变化
- Author:
Haitao DENG
;
Qing WANG
- Publication Type:Journal Article
- Keywords:
thoracic vertebrae;
fractures,compression;
fracture fixation,intramedul ary;
spinal cord injuries
- From:
Chinese Journal of Tissue Engineering Research
2014;(13):2055-2058
- CountryChina
- Language:Chinese
-
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 fol ow-up.
RESULTS AND CONCLUSION:Al the 46 cases were fol owed-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 fol ow-up period and preoperative period (P<0.05), but there was no significant difference when compared between immediately postoperative period and 1-year-fol ow 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 fol ow-up period and preoperative period (P<0.05), but there was no significant difference between immediately postoperative period and 1-year fol ow-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.
