Abstract
Background: This study aims to investigate the postoperative improvement of paralysis, fusion rate and risk factors for kyphosis progression in adults affected with spinal caries. Methods: Overall, 134 patients with spinal caries from the thoracic to lumbar spine from 1992 to 2021 were included in this study. Data concerning the affected level (thoracic, thoracolumbar, lumbar, and lumbosacral), bone fusion rate, and progression of the postoperative local kyphosis angle were collected. The risk factors for the progression of local kyphosis angle after anterior spinal fixation (ASF) were determined using linear regression analysis. Results: Preoperatively, the degree of spinal cord paralysis was D and E on Frankel classification. Improvement of paralysis was good with surgery, especially from C, D. The overall bone fusion rate was 83.2%. The only factor influencing the progression of local kyphosis angle after ASF was the level of the affected vertebra. Progression of kyphosis angle after ASF was very advanced in the thoracolumbar transition area. Conclusions: Surgical improvement in paraplegia and the fusion rate of ASF with only grafted bone was good. However, in patients affected in the thoracolumbar spine region, posterior instrumentation is desirable because of local kyphosis progression risk after surgery.
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