Background: Calcaneal fractures are complex injuries frequently associated with significant soft tissue damage and a high risk of post-operative complications, particularly infection. Despite advances in surgical techniques, infectious complications remain a major cause of morbidity and can severely compromise functional outcomes. The aim of this systematic review was to analyze the incidence, management strategies, and clinical impact of infectious complications following surgical treatment of calcaneal fractures. Methods: A systematic literature search was conducted in MEDLINE, Scopus, and Web of Science in accordance with PRISMA guidelines, including studies published up to May 2025. Randomized controlled trials and prospective and retrospective cohort studies involving adult patients surgically treated for calcaneal fractures and reporting post-operative infectious outcomes were included. Data extraction focused on patient demographics, fracture characteristics, surgical techniques, infection rates, microbiological findings, management strategies, complications, and functional outcomes. Methodological quality and risk of bias were assessed using the MINORS score. Due to substantial heterogeneity, results were synthesized descriptively. Results: Forty studies met the inclusion criteria, encompassing 5343 patients and 4638 surgically treated calcaneal fractures. Displaced intra-articular fractures predominated, with Sanders type II and III accounting for 79.8% of classified fractures, while Sanders type IV fractures represented 20.2% and were associated with higher complication rates. The overall post-operative infection rate was 9.4%, including 6.3% superficial surgical site infections and 3.0% deep infections. Open fractures accounted for 7.5% of reported cases and demonstrated markedly higher infection rates than closed injuries. Deep infections frequently required implant removal (62%), prolonged intravenous antibiotic therapy (100%), and additional surgical procedures (71%). Staphylococcus aureus, including methicillin-resistant strains, was the most commonly isolated pathogen. Functional outcomes were consistently worse in patients who developed infections. Conclusions: Infectious complications remain a clinically significant problem following surgical treatment of calcaneal fractures, particularly in severe fracture patterns, open injuries, and patients with relevant comorbidities. Deep infections are associated with substantial morbidity and inferior functional outcomes. Optimization of patient-related risk factors, careful surgical planning, and the selective use of minimally invasive approaches may help reduce infection risk. Further high-quality prospective studies with standardized outcome measures are needed to define optimal management strategies.
Capece et al. (Mon,) studied this question.