A patient who underwent first-stage revision procedure elsewhere for prosthetic joint infection (PJI) of the knee with Kocuria rosea presented to us 9 months after the index surgery, with persistent infection. First-stage revision surgery was repeated and Mycobacterium wolinskyi, a rare rapidly growing nontuberculous mycobacterium (RGM), was isolated from samples obtained by sonication of the cement spacer. After a prolonged antibiotic course, definitive implantation surgery was done. One-year postimplantation, patient remains infection free.
This is only the second known case of knee PJI caused by M. wolinskyi. This case highlights the possibility of RGM getting masked by other organisms.
1Department of Orthopaedics, Indraprastha Apollo Hospital, New Delhi, India
2Department of Pathology and Microbiology, Breach Candy Hospital, Mumbai, India
3Lilavati Hospital & Research Centre and Breach Candy Hospital, Mumbai, India
4Breach Candy Hospital, Mumbai, India
5Department of Pathology and Microbiology, Breach Candy Hospital, Mumbai, India
6Jhansi Orthopaedic Hospital, Jhansi, India
E-mail address for N. Bhatnagar: email@example.com
Investigation performed at the Department of Orthopaedics, Breach Candy Hospital, Mumbai, India
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