Abstract:

Objective To analyze the curative efficacy of additional injured vertebral augmentation versus that of additional injured vertebral nail in posterior short segment internal fixation fortraumatic type A thoracolumbar fracture，so as to provide reference for clinical selection. Methods A total of 74 patients with traumatic type A thoracolumbar fracture whohad been admitted to the Department of Orthopedics，the Third Affiliated Hospital of Anhui Medical University from January 2019 to June 2021 were selected. 33 of who munder went posterior short seg⁃ mental internal fixation plus injured vertebra augmentation（injured vertebra augmentation group）and 41 underwent posterior short segmental internal fixation plus injured vertebra fixation（injured vertebra nail group）. The surgical duration，intraoperative blood loss，weight⁃bearing time，visual analogue scale（VAS）score，Chinese Oswestry Dis⁃ ability Index（ODI），vertebral compression rate，Cobb Angle of injured vertebrae，and the increased angle in Cobb Angle of injured vertebrae one year after the procedures were assessed. Results The average follow ⁃ up was 17.7 months. There was a significant difference in weight ⁃bearing time between the two groups（P < 0.05）. The weight ⁃ bearing time in the injured vertebra nail group was earlier than that in the injured vertebra augmentation group. The postoperative low back pain（VAS score），functional performance（ODI score），Cobb angle and vertebral compres⁃ sion ratio were significantly improved inboth groups，but there was no significant difference between the two groups （P > 0.05）. In addition，although the Cobb angle and vertebral compression ratio of the fractured vertebrae were significantly corrected one year after the procedures，they were lost at varying degrees ascompared with one week after the procedures，there were no significant differences between the two groups（P > 0.05）. The surgical duration and intraoperative blood loss did not differ significantly between the two groups（P > 0.05）. Conclusions In the treatment of traumatic type A thoracolumbar fractures，the clinical efficacy of the two procedures are similar，but the weight⁃bearing time of additional injured vertebra nail is better than that of additional injured vertebra augmentation. Because the former is simpler and more matured，it is more suitable for clinical promotion. 

Key words:

thoracolumbar fracture, posterior short segment internal fixation, transvertebral nail placement, injured vertebral augmentation, calcium phosphate cement