Research Journal of Microbiology1816-4935xxxx-xxxxScience International10.3923/jm.2009.158.163KhosraviA.D. AhmadiF. SalmanzadehS. DashtbozorgA. MontazeriE. Abasi 4200944The aim of the present study was, to determine the bacteriology of orthopedic implant infections and susceptibilities of isolated bacteria to the commonly used antimicrobial agents. One hundred and sixty five patients were investigated for early or late postoperative infections of orthopedic bone implants using conventional microbiological procedures. Antimicrobial susceptibility testing were then performed for the isolated bacteria according to the standard guideline. A total of 155 isolates were recovered (152 aerobes and 3 anaerobes). Staphylococcus aureus, Klebsiella ozaenae and Pseudomonas aeruginosa were the most common causative agents. In relation to onset of infection, about 72.9% of patients were with early; 22.6% with delayed and 4.5% with late infections. The correlation between infection onset and total number of isolated bacteria was found to be statistically significant. The majority of isolated bacteria were sensitive to vancomycin, ciprofloxacine and imipenem. In conclusion, present study showed that S. aureus was the most common recovered bacterium with high sensitivity to vancomycin as expected. knowledge of the commonly isolated organisms and their antimicrobial susceptibility patterns within a given hospital assists in the selection of appropriate antimicrobial treatment.]]>Arciola, C.R., Y.H. An, D. Campoccia, M.E. Donati and L. Montanaro,200528109110100Arens, S., C. Kraft, U. Schlegel, G. Printzen, S.M. Perren and M. Hansis, 19991198285Berbari, E.F., A.D. Hanssen, M.C. Duffy, J.M. Steckelberg, D.M. Ilstrup, W.S. Harmsen and D.R. Osmon,19982712471254Brause, B.D.,20052005pp: 1332-1337pp: 1332-1337CLSI,20022002Forbes, B.A., D.F. Sahm and A.S. Weissfeld,200712th Edn.,pp: 389-397pp: 389-397Giulieri, S.G., P. Graber, P.E. Ochsner and W. Zimmerli,200432222228Goel, S.C.,200640133137Gomez, J., M. Rodriguez, V. Banos, L. Martinez and M.A. Claver et al.,200321232236Mousa, H.A.,20017738743Nishimura, S., T. Tsurumoto, A. Yonekura, K. Adachi and H. Shindo, 2006Staphylococcus aureus and Staphylococcus epidermidis biofilms isolated from infected total hip arthroplasty cases.]]>114650Phillips, C.B., J.A. Barrett, E. Losina, N.N. Mahomed and E.A. Lingard et al.,2003852026Trampuz, A. and W. Zimmerli,2005135243251Tunney, M.M., G. Ramage, S. Patrick, J.R. Nixon, P.G. Murphy and S.P. Gorman,19984230023005Valenziano, C.P., D. Chatter-Cora, A. O'neill, E.H. Hubli and E.A. Cudjoe,2002122259261Widmer, A.F.,200133S94106Zimmeli, W., A. Trampoz and P.E. Ochsner,200435116451654