title: Multidrug-resistant Acinetobacter baumannii infection following para-articular steroid injection in the knee--a case report.
abstract: Acinetobacter baumannii is an emerging gram-negative nosocomial pathogen that rarely causes infections in orthopaedic patients. We report a case of imipenem-resistant Acinetobacter baumannii paraarticular infection of the knee occurring in a healthy patient following one ambulatory steroid injection for the treatment of quadriceps tendinopathy. The infection was reduced by early surgical debridement of infected tissues, abscess drainage, and prolonged antibiotic therapy with colistin. To our knowledge, this is the first case in the literature reporting such an infection following single steroid injection in orthopaedic patients.
authors.affiliation: Department of Orthopaedics and Traumatology, Bone and Joint Infection Unit, Institute of Orthopaedic Surgery Maria Adelaide-AO CTO Maria Adelaide, Turin, Italy. stefartiaco@libero.it
authors.forename: Stefano
authors.initials: S
authors.lastname: Artiaco
authors.forename: Giuseppe
authors.initials: G
authors.lastname: Cicero
authors.forename: Franco
authors.initials: F
authors.lastname: Bellomo
authors.forename: Pasquale
authors.initials: P
authors.lastname: Bianchi
mesh_terms: D000151:Acinetobacter Infections / Q000175:diagnosis / Q000382:microbiology* / Q000628:therapy; D040981:Acinetobacter baumannii / Q000302:isolation & purification*; D000368:Aged; D000900:Anti-Bacterial Agents / Q000008:administration & dosage / Q000494:pharmacology; D003091:Colistin / Q000008:administration & dosage; D003131:Combined Modality Therapy; D003428:Cross Infection / Q000175:diagnosis / Q000382:microbiology* / Q000628:therapy; D003646:Debridement; D004322:Drainage; D004334:Drug Administration Schedule; D024901:Drug Resistance, Multiple, Bacterial; D005260:Female; D006801:Humans; D015378:Imipenem / Q000494:pharmacology; D007270:Injections, Intra-Articular / Q000009:adverse effects; D007719:Knee Joint / Q000187:drug effects / Q000382:microbiology* / Q000601:surgery; D008279:Magnetic Resonance Imaging; D008826:Microbial Sensitivity Tests; D013256:Steroids / Q000008:administration & dosage*; D052256:Tendinopathy / Q000188:drug therapy*; D016896:Treatment Outcome
chemical_list: D000900:Anti-Bacterial Agents; D013256:Steroids; D015378:Imipenem; D003091:Colistin