Rate of Infection and Causative Organisms in a Lateral Approach Total Ankle Replacement

Category: Ankle Arthritis; Other Introduction/Purpose: Although the rate of both superficial and deep infection in total ankle replacement (TAR) can reach up to 13% as reported in the literature, there is little information on the causative organisms, especially in laterally implanted prosthesis. This study aims to identify organisms causing infections to ultimately guide to better antibiotic prophylaxis. Methods: Between September 2016 and April 2021, we retrospectively reviewed patients who had an infection after a lateral TAR. Cause of the infection, causative organisms, and implant survival were recorded. Results: 10 of 130 patients (7.6%) had a superficial infection whereas 3 of 130 patients (2.3%) had a deep infection. Staphylococcus and Pseudomonas species were found to be the most common. No significant difference was found between the type of plate used for fibula fixation regarding wound dehiscence. Conclusion: Infection after lateral TAR is generally polymicrobial in nature with Staphylococcus and Pseudomonas species being the most common.