Microbial Colonization of Explants after Osteosynthesis in Small Animals: Incidence and Influencing Factors

Author:

Candela Andrade Mario1ORCID,Slunsky Pavel2,Pagel Tanja3,De Rus Aznar Ignacio4ORCID,Brunnberg Mathias5,Brunnberg Leo3

Affiliation:

1. Department of Medicine, Health and Medical University, 14471 Potsdam, Germany

2. Small Animal Hospital, Anicura Kleintierspezialisten Augsburg, 86157 Augsburg, Germany

3. Small Animal Clinic, Freie Universitaet Berlin, 14163 Berlin, Germany

4. Shoulder Surgery Unit, Orthoapedic and Traumatology Department, CEMTRO Clinic, 28003 Madrid, Spain

5. Small Animal Clinic, Tierarztpraxis Sörensen, 12207 Berlin, Germany

Abstract

Despite recent advancements in antibiotics, hygienic measures, and peri-operative systemic antibiotics, post-operative infections in osteosynthesis remain prevalent and continue to be among the most common surgical complications, leading to delayed fracture healing, osteomyelitis, implant loosening, and loss of function. Osteosynthesis implants are routinely utilized in veterinary medicine and the current study investigates the microbial colonization of implants following osteosynthesis in small animals, along with its incidence and influencing factors. The results are analyzed in regard to correlations between infection, patient, disease progression, and radiographic images, as well as other factors that may promote infection. Seventy-one explants from sixty-five patients were examined and evaluated for microbial colonization. Factors like body weight and age, location and type of plate and additional injuries like lung lesions, the surgeon’s experience, or the number of people present during the surgical procedure seem to influence the development of an infection. Of the animals, 60% showed osteolytic changes and 73.3% of those with dysfunctional mobility had an implant infection. Microorganisms were detected in almost 50% of the explants, but a clinically relevant infection was only present in five patients (7.3%), suggesting that the presence of microorganisms on an implant does not necessarily lead to treatment complications.

Publisher

MDPI AG

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