nstances of prosthetic joint infection due to Mycobacterium tuberculosis have been reported in the literature 1-5 ; however, it is extremely rare to find tuberculosis causing deep infection around fracture-fixation implants. We report the clinical presentations and outcomes of five such cases that were treated at the University College of Medical Sciences and Guru Teg Bahadur Hospital, Delhi, India, between 1992 and 2004. There was no history of clinical manifestations of tuberculosis and no evidence of a pulmonary primary focus of the infection in these patients at the time of initial fracture treatment. The patients were informed that data concerning these cases would be submitted for publication.Case Reports ASE 1. A twenty-five-year-old woman underwent open reduction and internal fixation of a closed fracture of the right radius and ulna with dynamic compression plates. The postoperative period was uneventful until about four months, when the ulnar scar became indurated. Subsequently, a discharging sinus developed with serous discharge and Staphylococcus aureus grew on culture. Despite therapy with broadspectrum intravenous antibiotics, there was persistent discharge from the sinus and the subsequent cultures were negative for pyogenic organisms. The patient was never febrile, and the erythrocyte sedimentation rate was only slightly elevated (25 mm/hr). At five months, radiographs of the forearm showed lytic lesions underneath the plate and evidence of loosened screws. The wound was débrided, and the ulnar plate was removed. A cystic cavity was found beneath the plate. Histopathological examination of material that had been curetted from the cavity revealed tubercular epithelioid granulomas and tubercular osteomyelitis. Retrospective questioning of the patient revealed no history of contact with patients who had tuberculosis. A review of the chest radiographs demonstrated no evidence of a tubercular focus. The patient was managed with standard multidrug antitubercular chemotherapy for eighteen months. The wound healed completely within six weeks, and osseous healing was seen by nine months, with good recovery of upper extremity function. Follow-up at thirteen years revealed no recurrence of the infection. CASE 2. A fifty-one-year-old man sustained multiple closed fractures following a roadside accident. The injuries included a cervicotrochanteric fracture of the right femur along with an ipsilateral midshaft femoral fracture. The patient also had head and chest injuries that prevented any immediate operative procedure for definitive treatment of the fractures, which instead were reduced closed and stabilized with an external fixator. At four months after the injury, a seropurulent discharge was observed around the proximal two pins. Cultures demonstrated growth of Staphylococcus aureus, which was sensitive to cloxacillin.After three weeks of antibiotic treatment, however, the discharge persisted and became watery. Subsequent cultures were negative for pyogenic organisms. A chest radiograph revealed normal f...