Benchmarking Early Unplanned Trauma Re-operations: A Five-Year Institutional Review of 7,400 Orthopaedic Cases

Background Unplanned re-operations within 28 days of trauma surgery play a pivotal role in orthopaedic care and represent a critical indicator of surgical quality and postoperative complications. It has important consequences for patient outcomes and resource allocation in healthcare inefficiencies. This original article investigates over 7,400 orthopaedic trauma cases to detail the incidence, etiology, and timing of early re-operative procedures while presenting contemporary benchmarks for clinical governance and service improvement. Methods A retrospective institutional review was conducted of all orthopaedic trauma surgeries performed at Luton and Dunstable Teaching Hospital (LDH) between January 2019 and June 2024. A total of 7,486 procedures were screened, and all unplanned returns to theatre within 28 days (n = 53) were analyzed. Variables collected included patient demographics, American Society of Anesthesiologists (ASA) physical status classification, surgical site, indication, timing, surgeon grade, microbiology, and outcomes. Statistical analysis included exact binomial confidence intervals (CIs), chi-square tests, Welch's t-tests, and Kruskal-Wallis tests. Results Across 7,486 trauma operations, 53 patients required an unplanned return to theatre within 28 days, giving an incidence of 0.71% (95% CI: 0.53%-0.93%). Among re-operated cases, infection was the commonest indication at 40% (95% CI: 26.5%-54.0%), followed by implant/fixation failure at 26% (95% CI: 15.3%-40.3%) and dislocation at 19% (95% CI: 9.4%-32.0%). Age differed significantly by indication for re-operation (Kruskal-Wallis, p = 0.028), with dislocation cases occurring more in older patients. ASA grade also differed by indication (Kruskal-Wallis, p = 0.010). Hip/femur re-operation cases were significantly older than non-hip/femur cases (Welch's t-test, p < 0.000001). No significant difference in cause distribution by sex was observed (χ², p = 0.486). Most re-operations (72%) occurred between postoperative weeks 2 and 3. Culture positivity was identified in 57% of infection-related cases, predominantly Staphylococcus aureus or polymicrobial organisms, with 33.3% of the infection-related re-operated cases resulting in long-term complications or mortality within 24 months. Conclusion Early unplanned re-operative procedures are infrequent but clinically significant. The results obtained from this study align with existing UK data and can be used for governance priorities. These findings also highlight priority areas for potential quality improvement, including enhancing infection control measures, improving microbiology turnaround times, optimizing fixation strategies for osteoporotic bone, and improving postoperative surveillance for high-risk populations.