Spinal fractures in fused spines: nonoperative treatment is a reliable alternative.

Abstract

Spinal fractures in fused spines such as in ankylosing spondylitis or DISH are typically of type B or C fractures where operative treatment is recommended. The mortality rate in non-operatively treated patients is reported to be 51%. The purpose of this study was to investigate the mortality rate, complication rate and demographics of patients following non-operatively treatment in fused spine injuries. Between 2019 and 2021, a retrospective study was conducted including all patients who presented to our trauma center with a spinal fracture of a fused spine. Radiology and patient charts were analyzed for fracture pattern, complications, neurological deficit, comorbidities, and mortality rate. A total of 49 patients were found at a mean age was 79.8 ± 10.9years and primarily males were affected in 65.3%. All fractures were of type B and the thoracic spine was involved in 85.7%. The mean follow-up was 6.3 ± 8.2months and fusion was obtained in all patients. No neurological deficit was observed in any. A total of 13 patients died at a mean age of 86.5 ± 10.0years after 157.1 ± 158.1days. 6 patients (10.2%) deceased within the first 6weeks at a mean age of 91.8 ± 3.8years. One patient each suffered from heart failure, an acute delirium, end stage colon cancer and subdural hemorrhage. This study shows that the mortality rate in the first 6weeks following a fracture in a fused spine is 10.2% for patients above the age of 90years. Therefore, non-operative treatment should be taken into consideration as the mortality rate in other studies may be overestimated. III, retrospective study.