Multifocal osteomyelitis caused by Mycobacterium chelonei. A therapeutic dilemma.

An elderly man developed chronic osteomyelitis in the right tibia and both feet after a penetrating injury to the right knee. Mycobacterium chelonei, a species closely related to M. fortuitum, was cultured from all sites. The selection of antibiotic therapy was difficult. The need for prolonged treatment and possible surgical intervention is highlighted.