Infected total hip arthroplasty after intravesical bacillus Calmette-Guérin therapy.

An infected total hip arthroplasty remains one of the most challenging problems faced by orthopedic surgeons. We present the case of a 76-year-old man with an unusual infected total hip arthroplasty. Four years before presenting to our service, the patient was treated for vesical transitional cell carcinoma with intravesical administration of bacille Calmette-Guérin. The patient presented with groin pain, radiographic loosening of the hip implant, and elevated erythrocyte sedimentation rate and C-reactive protein. He underwent irrigation and debridement of the hip with removal of components. Cultures isolated bacille Calmette-Guérin necessitating treatment with antituberculosis chemotherapy. Bone cultures obtained under computed tomography guidance were negative, and reimplantation surgery was performed with a successful outcome. Pathway of infection spread, diagnosis, and treatment of this rare infection are discussed with review of the literature.