title: [Incidence of hip and knee prosthetic infections in a specialized center of Mexico City].
abstract: BACKGROUND
  Hip and knee prosthetic replacements have proven to be the most appropriate treatment in the joints that do not benefit from medical or arthroscopic interventions; however, infections are the most feared complication. It is recommended that the incidence of infection should not exceed 2%.
  
  
  METHODS
  This was an observational, prospective, longitudinal and observational study conducted in patients fitted with a prosthetic joint from August 2011 to July 2012. Patients were followed up pre and post-surgery for one year to identify a prosthetic infection, diagnosed using international parameters. We calculated the incidence of prosthetic infection, as well as the incidence density.
  
  
  RESULTS
  A total of 339 patients (179 hip and 160 knee) were included. Variations in the time of pre-operative antibiotics' administration were observed. Six prosthetic infections were identified with an incidence rate of 1.79/339 arthroplasties, 2.2/179 hip procedures, and 1.25/160 knee arthroplasties. An incidence density of 0.02/year for hip arthroplasties and 0.11/year for knee procedures was identified. There were 4 infections of hip and 2 of knee. Five infections were acute and one chronic. The isolated microorganisms were E. faecalis, S. epidermidis (2), S. mitis, S. aureus and P. stomatis.
  
  
  CONCLUSIONS
  The incidence of prosthetic joint infection in the first year of follow-up at our centre is within the recommended parameters. Surgical techniques and organizational practices influence the results.
authors.affiliation: Laboratorio de Infectología, Instituto Nacional de Rehabilitación Luis Guillermo Ibarra Ibarra, Ciudad de México, México. Electronic address: raffcend@yahoo.com.
authors.forename: Rafael
authors.initials: R
authors.lastname: Franco-Cendejas
authors.affiliation: Laboratorio de Infectología, Instituto Nacional de Rehabilitación Luis Guillermo Ibarra Ibarra, Ciudad de México, México.
authors.forename: Erika Lizbeth
authors.initials: EL
authors.lastname: Contreras-Córdova
authors.affiliation: Laboratorio de Infectología, Instituto Nacional de Rehabilitación Luis Guillermo Ibarra Ibarra, Ciudad de México, México.
authors.forename: Jaime Arturo
authors.initials: JA
authors.lastname: Mondragón-Eguiluz
authors.affiliation: Laboratorio de Infectología, Instituto Nacional de Rehabilitación Luis Guillermo Ibarra Ibarra, Ciudad de México, México.
authors.forename: Edgar Samuel
authors.initials: ES
authors.lastname: Vanegas-Rodríguez
authors.affiliation: Servicio de Reconstrucción Articular de Cadera y Rodilla, Instituto Nacional de Rehabilitación Luis Guillermo Ibarra Ibarra, Ciudad de México, México.
authors.forename: Víctor Manuel
authors.initials: VM
authors.lastname: Ilizaliturri-Sánchez
authors.affiliation: Subdirección de Epidemiología Hospitalaria y Control de la Calidad de la Atención Médica, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Ciudad de México, México.
authors.forename: Arturo
authors.initials: A
authors.lastname: Galindo-Fraga
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D019072:Antibiotic Prophylaxis; D019644:Arthroplasty, Replacement, Hip; D019645:Arthroplasty, Replacement, Knee; D015897:Comorbidity; D003428:Cross Infection / Q000453:epidemiology* / Q000382:microbiology / Q000517:prevention & control; D005260:Female; D005500:Follow-Up Studies; D006622:Hip Prosthesis / Q000009:adverse effects*; D006782:Hospitals, Special / Q000706:statistics & numerical data; D006786:Hospitals, Urban / Q000706:statistics & numerical data; D006801:Humans; D015994:Incidence; D007720:Knee Prosthesis / Q000009:adverse effects*; D008297:Male; D008800:Mexico / Q000453:epidemiology; D008875:Middle Aged; D011446:Prospective Studies; D016459:Prosthesis-Related Infections / Q000453:epidemiology* / Q000382:microbiology / Q000517:prevention & control; D012306:Risk; D013530:Surgical Wound Infection / Q000453:epidemiology; D055815:Young Adult
keywords: Bacteria; Incidence; Incidencia; Infección relacionada con prótesis; Prosthesis-related infections