The authors comment on the experience acquired in the treatment of chronic osteomyelitis of the long bones with intramedullary reaming. The procedure is reserved for the femur and tibia with stage I chronic osteomedullary infection according to the Cierny-Mader classification. 2 A total of 36 patients were treated. Surgical treatment consists in reaming of the medullary canal and in its contra-opening with antiseptic solutions. Mean time for lavage is 6 days. Criteria for healing involves the absence of clinical, humoral, and radiologic signs of active medullary sites of infection. The percentage of healing was 83.2%, mean long-term follow-up was 2.9 years.