European Spine Journal - 2026-08-29 - Journal Article
The fourth column in thoracic vertebral fractures: concomitant thoracic cage injuries and mortality in 27,814 inpatient cases from the german national DRG database.
Straub J, Ardelt M, Reinhard J, Mesfin A, Arias H, Walter N, Alt V, Popp D, Lang S
Topics
Key Takeaway
Fourth column thoracic fractures (concomitant sternal fracture) represent 1.8% of thoracic vertebral fractures but carry a PCCL ≥3 comorbidity burden of 59.3% vs. 11.7% in the general thoracic fracture cohort, with in-hospital mortality reaching 2.89% in patients ≥75 years.
Summary Depth
Choose how much analysis to show on this article page.
Summary
This cross-sectional analysis of the 2024 German DRG database characterized epidemiology, comorbidity burden, and in-hospital mortality across three thoracic vertebral fracture populations: all adults (n=27,315), geriatric patients ≥75 years (n=16,276), and fourth column injuries with concomitant sternal fracture (n=499). Fourth column fractures showed male predominance (57.7%), younger age profile, prolonged hospitalization (14.7 vs. 10.1 days), and markedly higher comorbidity burden (PCCL ≥3: 59.3% vs. 11.7%). Geriatric mortality (2.89%) was driven by systemic failure—cardiac arrest (OR=51.74), sepsis (OR=42.96), respiratory insufficiency (OR=14.67)—rather than fracture severity, while haemothorax (OR=5.73) and serial rib fractures ≥4 ribs (OR=3.31) independently predicted mortality in the overall cohort.
Key Limitation
Administrative coding precludes determination of injury mechanism, neurologic status, fracture morphology, and treatment rendered, making causal inference and surgical decision-making guidance impossible.
Original Abstract
PURPOSE
Population-level data on fourth column fractures and prognostic implications remain lacking. This study aimed to characterise the epidemiology of thoracic vertebral fractures in Germany, including the prevalence of fourth column injuries and geriatric patients, comorbidity burden and the in-hospital mortality across distinct fracture populations.
METHODS
A Nationwide cross-sectional administrative inpatient data analysis of all adult thoracic vertebral fracture cases (ICD-10-GM S22.0x/S22.1) from the 2024 German Diagnosis Related Groups database was conducted across three groups: thoracic spine group (n = 27,315), geriatric subgroup (≥ 75 years; n = 16,276), and fourth column group with concomitant sternal fracture (n = 499). Data were provided by the German Institute for the Hospital Remuneration System.
RESULTS
Among 27,814 cases 63.0% were female and 58.5% aged ≥ 75 years. Fourth column fractures (1.8%) defined a mechanistically distinct entity: male predominance (57.7%), younger age distribution (≥ 75 years: 30.3% vs. 59.0%), prolonged hospitalisation (14.7 vs. 10.1 days) and comorbidity burden (PCCL ≥ 3: 59.3% vs. 11.7%). Mortality in the thoracic spine group was 2.00%, rising to 2.89% in patients aged ≥ 75 years, accounting for 86.1% of all deaths. In geriatric subgroup, mortality was dominated by acute organ-failure: cardiac arrest (OR = 51.74), sepsis (OR = 42.96) and respiratory insufficiency (OR = 14.67). In thoracic spine group, concomitant thoracic cage injuries were associated with elevated mortality: haemothorax (OR = 5.73) and serial rib fractures (≥ 4 ribs, OR = 3.31).
CONCLUSIONS
Fourth column fractures constitute a mechanistically distinct high-energy injury entity, while in the geriatric thoracic spine fracture population, mortality is governed by vulnerability rather than fracture severity, suggesting that frailty assessment may be of value and risk-stratified clinical pathways.