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General Orthopaedics

HIGH INCIDENCE OF ENTEROBACTER CLOACAE IN ACUTE INFECTIONS POST OSTEOSYNTHESIS OF ANKLE FRACTURES: A MULTICENTRE STUDY

The European Bone and Joint Infection Society (EBJIS), Ljubljana, Slovenia, 7–9 October 2021.



Abstract

Aim

The purpose of this study is to analyze the demographic and microbiological variables of acute ankle infections posterior to ankle osteosynthesis and to determine the different characteristics of patients withE. cloacae infection.

Method

A multicenter retrospective observational study (4 national hospitals) of acute post osteosynthesis infections of ankle fracture operated between 2015 and 2018 was implemented. The demographic and microbiological variables relating to the surgical intervention and the antibiotic treatment performed were collected. A descriptive assessment of all the variables and a univariate comparison between patients with E. cloacae infection and patients with alternative microorganism infections were performed. The SPSS v25 program for Windows was the choice for statistical analysis.

Results

71 Patients with an average age of 57 years were included, the majority being males (55%). 31% of patients were diabetic, 27% had vascular pathology, and 18.3% had a BMI greater than 35. Trimalleolar fracture was the most common in our study being 52%. 26.8% were open fractures. The microorganisms isolated were: 25% S. aureus, 22.5% E. cloacae and 22.5% polymicrobial. Accounting for polymicrobial infections, the presence of E. cloacae rises to 32%. In the univariate analysis, only significant differences were found in age (patients with E. cloacae infection were older) and the use of VAC therapy.

Conclusions

In our series, higher percentages of E. cloacae infection were observed than those described in the literature. There are statistically significant differences in the variables of age and need for VAC therapy. The high incidence of E. cloacae infections suggests the vital importance of adapting antibiotic prophylaxis, ensuring the coverage of this microorganism.


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