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Septic Nonunion Caused by Mycobacterium canariasense

A Case Report

Vicente, Matias, MD1,*; Lung, Mayli, PhD, MD1,*; Gulin, Carlos, MD1; Tórtola, María Teresa, MD1; Corona, Pablo S., PhD, MD1

doi: 10.2106/JBJS.CC.18.00033
Case Reports
Disclosures

Case: A 43-year-old former drug user presented with a mycobacterium-caused septic nonunion of the humeral shaft. The patient had undergone 2 previous surgeries for a hematogenous fracture-related infection due to Staphylococcus aureus. The procedures had included debridement, double-plate osteosynthesis, and placement of a gentamicin-loaded bone substitute. Culture specimens produced growth of Mycobacterium canariasense. Because the microbiological diagnosis was obtained after the patient had been discharged, no antibiotic treatment could be prescribed. Nevertheless, solid bone fusion was observed in the most recent outpatient examination.

Conclusion: This case illustrates the importance of considering atypical pathogens in patients who are immunoincompetent. To the best of our knowledge, this is the first reported case of septic nonunion caused by M. canariasense.

1Orthopedic Department (M.V.), Septic and Reconstructive Surgery Unit (P.S.C.), and Microbiology Department (M.L., C.G., and M.T.T.), Hospital Universitari Vall d’Hebron, Universitat Autònoma de Barcelona, Barcelona, Spain

E-mail address for M. Vicente: matias.vicente@vhebron.net

*Matias Vicente, MD, and Mayli Lung, PhD, MD, contributed equally to the writing of this article.

Copyright © 2018 by The Journal of Bone and Joint Surgery, Incorporated
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