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Safety of Prepping the External Fixator In Situ During Staged Internal Fixation of Pilon Fractures: A Retrospective Comparative Cohort Study.
Journal of Orthopaedic Trauma 2023 April 14
OBJECTIVE: (1) To assess the rate of fracture-related infection (FRI) and unplanned reoperation of disinfecting and prepping in the external fixator instrument (Ex-Fix) during definitive open reduction and internal fixation (ORIF) of pilon fractures treated by a staged protocol and (2) to determine whether the amount of time from external fixation to ORIF influences the risk of FRI.
DESIGN: Retrospective cohort study.
SETTING: Level-1 academic trauma center.
PATIENTS: One hundred thirty-three patients who underwent operative treatment for pilon fracture between 2010 and 2020.
INTERVENTION: External fixation and ORIF with or without the Ex-Fix prepped in situ during definitive fixation.
MAIN OUTCOME MEASUREMENTS: FRI and unplanned reoperation rates.
RESULTS: 133 patients were enrolled, of which 47 (35.3%) had Ex-Fix elements prepped in situ. There was an overall infection rate of 23.3% and unplanned reoperation rate of 11.3%, and there was no significant difference in rates between the two cohorts. Patients with Ex-Fix elements prepped in situ who developed a FRI had a higher rate of MRSA and MSSA. Diabetes (p=0.0019), open fracture (p=0.0014), and longer (>=30 days) interval to ORIF (p=0.0001) were associated with postoperative FRI.
CONCLUSIONS: Prepping elements of the Ex-Fix in situ did not lead to an increase in rates of FRI or unplanned reoperation. Although diabetes and open fracture were associated with FRI risk, a stronger association was a longer interval of Ex-Fix utilization before definitive internal fixation, specifically 30 days or greater.
DESIGN: Retrospective cohort study.
SETTING: Level-1 academic trauma center.
PATIENTS: One hundred thirty-three patients who underwent operative treatment for pilon fracture between 2010 and 2020.
INTERVENTION: External fixation and ORIF with or without the Ex-Fix prepped in situ during definitive fixation.
MAIN OUTCOME MEASUREMENTS: FRI and unplanned reoperation rates.
RESULTS: 133 patients were enrolled, of which 47 (35.3%) had Ex-Fix elements prepped in situ. There was an overall infection rate of 23.3% and unplanned reoperation rate of 11.3%, and there was no significant difference in rates between the two cohorts. Patients with Ex-Fix elements prepped in situ who developed a FRI had a higher rate of MRSA and MSSA. Diabetes (p=0.0019), open fracture (p=0.0014), and longer (>=30 days) interval to ORIF (p=0.0001) were associated with postoperative FRI.
CONCLUSIONS: Prepping elements of the Ex-Fix in situ did not lead to an increase in rates of FRI or unplanned reoperation. Although diabetes and open fracture were associated with FRI risk, a stronger association was a longer interval of Ex-Fix utilization before definitive internal fixation, specifically 30 days or greater.
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