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  • Title: The use of erythromycin and colistin-loaded cement in total knee arthroplasty does not reduce the incidence of infection: a prospective randomized study in 3000 knees.
    Author: Hinarejos P, Guirro P, Leal J, Montserrat F, Pelfort X, Sorli ML, Horcajada JP, Puig L.
    Journal: J Bone Joint Surg Am; 2013 May 01; 95(9):769-74. PubMed ID: 23636182.
    Abstract:
    BACKGROUND: The use of antibiotic-loaded cement is believed to prevent infection in primary total knee arthroplasty, but there is a lack of randomized studies to support this concept. The aim of this study was to evaluate the use of an antibiotic-loaded cement to reduce the infection rate in primary total knee arthroplasty. METHODS: This is a prospective randomized study with 2948 cemented total knee arthroplasties, in which bone cement without antibiotic was used in 1465 knees (the control group) and a bone cement loaded with erythromycin and colistin was used in 1483 knees (the study group). All patients received the same systemic prophylactic antibiotics. The patients were followed for a minimum of twelve months. The rate of infection was analyzed according to the criteria of the Centers for Disease Control and Prevention. RESULTS: The rate of deep infection (1.4% in the control group and 1.35% in the study group; p = 0.96) and the rate of superficial infection (1.2% and 1.8%, respectively; p = 0.53) were similar in both groups. The factors related to a higher rate of deep infection in a multivariate analysis were male sex and an operating time of >125 minutes. CONCLUSIONS: The use of erythromycin and colistin-loaded bone cement in total knee arthroplasty did not lead to a decrease in the rate of infection when systemic prophylactic antibiotics were used, a finding that suggests that the use of antibiotic-loaded bone cement would not be indicated in the general population. Further research is needed to assess whether its use is recommended for patients with a higher risk of infection.
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