Bacteriological study of orthopaedic infections

Abstract

Open fractures are often associated with severe soft tissues damage, devascularization, and devitalization of bone fragments, thus increasing the susceptibility of bone to infection. Infections at the site of orthopaedic implants are also devastating complication. Hence an endeavor is made to study the different bacteria causing orthopaedic infections and susceptibilities of isolated bacteria to various antimicrobial agents. 75 osteomyelitis patients’ specimens were collected, bacterial species were isolated and identified by morphology, cultural characteristics and biochemical reactions according to standard techniques and different antibiotics were tested for various microorganisms. Osteomyelitis mainly affects tibia 30.6% of the cases, more common in males 76%, and was common in 20-39 yrs age group, predominantly of monomicrobial 78% colonies. Majority of the organisms isolated were Gram positive. Staphylococcus aureus is the commonest pathogen causing Osteomyelitis, among gram negative bacilli Pseudomonas aeruginosa is the commonest isolates. All MRSA strains were 100% sensitive to vancomycin and linezolid and Gram negative bacteria were sensitive to Cefepime 96% and Amikacin 70%. From the present study we conclude that Bacteriological study of orthopaedic infections is very much required to treat the osteomyelitis patients with less number of complications and Sequeale.