<it>Abiotrophia defectiva </it>knee prosthesis infection: A case report

<p>Abstract</p> <p>Background</p> <p><it>Abiotrophia </it>species have rarely been implicated in osteoarticular infections. We report one case of an <it>A. defectiva </it>knee prosthesis infection.</p> <p>Case presentation</p> &...

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Main Authors: Levy Pierre-Yves, Drancourt Michel, Grillo Jean-Charles, Argenson Jean-Noël, Cassir Nadim
Format: Article
Language:English
Published: BMC 2011-09-01
Series:Journal of Medical Case Reports
Online Access:http://www.jmedicalcasereports.com/content/5/1/438
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author Levy Pierre-Yves
Drancourt Michel
Grillo Jean-Charles
Argenson Jean-Noël
Cassir Nadim
author_facet Levy Pierre-Yves
Drancourt Michel
Grillo Jean-Charles
Argenson Jean-Noël
Cassir Nadim
author_sort Levy Pierre-Yves
collection DOAJ
description <p>Abstract</p> <p>Background</p> <p><it>Abiotrophia </it>species have rarely been implicated in osteoarticular infections. We report one case of an <it>A. defectiva </it>knee prosthesis infection.</p> <p>Case presentation</p> <p>A 71-year-old man of Italian origin presented with pain and swelling of the knee four years after the implantation of a total knee replacement prosthesis. While standard culturing of the synovial fluid resulted in no isolation of microorganisms, the direct inoculation of the synovial fluid into a rich culture medium resulted in the identification of <it>A. defectiva </it>by polymerase chain reaction sequencing. Repeated attempts of culturing microorganisms from blood were negative, and echocardiograms and colonoscopies were unremarkable. High-dose amoxicillin for nine months and a two-stage replacement of the knee prosthesis led to full patient recovery by the time of the 12-month follow-up examination.</p> <p>Conclusions</p> <p>Because <it>Abiotrophia </it>spp. are fastidious microorganisms, it is likely that cases of <it>Abiotrophia </it>orthopedic infection are misdiagnosed as culture-negative infections. Direct inoculation of synovial fluids into rich broth medium and further polymerase chain reaction-based detection of culture-negative synovial fluids are key tests for accurate documentation and detection of these infections.</p>
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spelling doaj.art-f3ae1c7dc1654f14bfe3211371d4aa5e2022-12-22T02:11:51ZengBMCJournal of Medical Case Reports1752-19472011-09-015143810.1186/1752-1947-5-438<it>Abiotrophia defectiva </it>knee prosthesis infection: A case reportLevy Pierre-YvesDrancourt MichelGrillo Jean-CharlesArgenson Jean-NoëlCassir Nadim<p>Abstract</p> <p>Background</p> <p><it>Abiotrophia </it>species have rarely been implicated in osteoarticular infections. We report one case of an <it>A. defectiva </it>knee prosthesis infection.</p> <p>Case presentation</p> <p>A 71-year-old man of Italian origin presented with pain and swelling of the knee four years after the implantation of a total knee replacement prosthesis. While standard culturing of the synovial fluid resulted in no isolation of microorganisms, the direct inoculation of the synovial fluid into a rich culture medium resulted in the identification of <it>A. defectiva </it>by polymerase chain reaction sequencing. Repeated attempts of culturing microorganisms from blood were negative, and echocardiograms and colonoscopies were unremarkable. High-dose amoxicillin for nine months and a two-stage replacement of the knee prosthesis led to full patient recovery by the time of the 12-month follow-up examination.</p> <p>Conclusions</p> <p>Because <it>Abiotrophia </it>spp. are fastidious microorganisms, it is likely that cases of <it>Abiotrophia </it>orthopedic infection are misdiagnosed as culture-negative infections. Direct inoculation of synovial fluids into rich broth medium and further polymerase chain reaction-based detection of culture-negative synovial fluids are key tests for accurate documentation and detection of these infections.</p>http://www.jmedicalcasereports.com/content/5/1/438
spellingShingle Levy Pierre-Yves
Drancourt Michel
Grillo Jean-Charles
Argenson Jean-Noël
Cassir Nadim
<it>Abiotrophia defectiva </it>knee prosthesis infection: A case report
Journal of Medical Case Reports
title <it>Abiotrophia defectiva </it>knee prosthesis infection: A case report
title_full <it>Abiotrophia defectiva </it>knee prosthesis infection: A case report
title_fullStr <it>Abiotrophia defectiva </it>knee prosthesis infection: A case report
title_full_unstemmed <it>Abiotrophia defectiva </it>knee prosthesis infection: A case report
title_short <it>Abiotrophia defectiva </it>knee prosthesis infection: A case report
title_sort it abiotrophia defectiva it knee prosthesis infection a case report
url http://www.jmedicalcasereports.com/content/5/1/438
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AT drancourtmichel itabiotrophiadefectivaitkneeprosthesisinfectionacasereport
AT grillojeancharles itabiotrophiadefectivaitkneeprosthesisinfectionacasereport
AT argensonjeannoel itabiotrophiadefectivaitkneeprosthesisinfectionacasereport
AT cassirnadim itabiotrophiadefectivaitkneeprosthesisinfectionacasereport