Neurospine.  2021 Sep;18(3):524-532. 10.14245/ns.2040628.314.

A Comparison of Mortality and Morbidity Between Complex and Degenerative Spine Surgery in Prospectively Collected Data From 2,280 Procedures

Affiliations
  • 1Copenhagen Spine Research Unit (CSRU), Section of Spine Surgery, Center of Rheumatology and Spine Diseases, Rigshospitalet, Glostrup, Denmark
  • 2Department of Epidemiological Research, Statens Serum Institut, Copenhagen, Denmark
  • 3Spine Unit, Department of Orthopedic Surgery, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark
  • 4Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
  • 5Department of Orthopedic Surgery & Scoliosis Surgery, Texas Children's Hospital & Baylor College of Medicine, Houston, TX, USA

Abstract


Objective
The reported incidence of complications and/or adverse events (AEs) following spine surgery varies greatly. A validated, systematic, reproducible reporting system to quantify AEs was used in 2 prospective cohorts, from 2 spine surgery centers, conducting either complex or purely degenerative spine surgery; in a comparative fashion. The aim was to highlight the differences between 2 distinctly different prospective cohorts with patients from the same background population.
Methods
AEs were registered according to the predefined AE variables in the SAVES (Spine AdVerse Events Severity) system which was used to record all intra- and perioperative AEs. Additional outcomes, including mortality, length of stay, wound infection requiring revision, readmission, and unplanned revision surgery during the index admission, were also registered.
Results
A total of 593 complex and 1,687 degenerative procedures were consecutively included with 100% data completion. There was a significant difference in morbidity when comparing the total number of AEs between the 2 groups (p < 0.001): with a mean number of 1.42 AEs per patient (n = 845) in the complex cohort, and 0.97 AEs per patient (n = 1,630) in the degenerative cohort.
Conclusion
In this prospective study comparing 2 cohorts, we report the rates of AEs related to spine surgery using a validated reproducible grading system for registration. The rates of morbidity and mortality were significantly higher following complex spine surgery compared to surgery for degenerative spine disease.

Keyword

Prospective study; Complications; Adverse events; Complex spine surgery; Degenerative spine surgery
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