title: Low-grade infection after a total knee arthroplasty caused by Actinomyces naeslundii.
abstract: Here, we present a case of an 85-year-old woman with a low-grade-infection caused by Actinomyces naeslundii after total-knee arthroplasty (TKA) followed by septic loosening. Actinomyces naeslundii was cultured from a tissue sample from the knee joint capsule/synovial tissue obtained after the initial TKA. A review of the literature revealed two cases of periprosthetic infection and another three cases of arthritis due to Actinomyces naeslundii. So far, no standard treatment for periprosthetic infections caused by Actinomyces species has been established.
authors.affiliation: Department of Orthopedics, University Hospital Rostock, Germany.
authors.forename: J
authors.initials: J
authors.lastname: Hedke
authors.affiliation: Department of Orthopedics, University Hospital Rostock, Germany.
authors.forename: R
authors.initials: R
authors.lastname: Skripitz
authors.affiliation: Department of Orthopedics, University Hospital Rostock, Germany.
authors.forename: M
authors.initials: M
authors.lastname: Ellenrieder
authors.affiliation: Institute for Medical Microbiology, Virology and Hygiene, University Hospital Rostock, Germany.|Department of Tropical Medicine at the Bernhard Nocht Institute, German Armed Forces Hospital, Hamburg, Germany.
authors.forename: H
authors.initials: H
authors.lastname: Frickmann
authors.affiliation: Institute for Medical Microbiology, Virology and Hygiene, University Hospital Rostock, Germany.
authors.forename: T
authors.initials: T
authors.lastname: Köller
authors.affiliation: Institute for Medical Microbiology, Virology and Hygiene, University Hospital Rostock, Germany.
authors.forename: A
authors.initials: A
authors.lastname: Podbielski
authors.affiliation: Department of Orthopedics, University Hospital Rostock, Germany.
authors.forename: W
authors.initials: W
authors.lastname: Mittelmeier
mesh_terms: D000190:Actinomyces / Q000302:isolation & purification*; D000196:Actinomycosis / Q000175:diagnosis* / Q000382:microbiology / Q000473:pathology*; D000369:Aged, 80 and over; D019645:Arthroplasty, Replacement, Knee / Q000009:adverse effects*; D005260:Female; D006651:Histocytochemistry; D006801:Humans; D007719:Knee Joint / Q000000981:diagnostic imaging / Q000473:pathology; D016459:Prosthesis-Related Infections / Q000175:diagnosis* / Q000382:microbiology / Q000473:pathology*; D011859:Radiography