Introduction and diifusion of Ponseti Method for congenital clubfoot treatment in Brazil are discussed. Ponseti Method is based on specific serial casting, Achillis tenotomy and use of abduction brace to maintain correction. This was different from standard treatment in Brazil at that time, based in many more months of serial casting and an extensive foot surgery. The Ponseti Method difusion is analized in a cronologic manner, with focus in the history of its difusion in Brazil and in the world, beginning in University of Iowa. Internet influence is discussed, as well as the Program-Ponseti Brasil‖ for training orthopaedic surgeons in Ponseti clubfoot treatment. Populational data were used to evaluate Ponseti Method difusion, before the Training Program. Four manners of direct evaluation of the impact of the Training Program are presented: the participants´reaction, enquiries about clinical practice with Ponseti Method after one year, evaluation of the impact of the Training Program in two cities, São Luis and Tesesina, and case series presentations of nine Brazilian Orthopaedic Clinics in a national panel in the Advanced Ponseti Course, two years after the Training Program‖Ponseti Brasil‖. To reinforce information about difusion, publications in developing countries are discussed, extending indications for use of the Ponseti Method. Tendencies of medical literature about clubfoot treatment were analized, through written english and latinoamerican databases, and proceedings of two national meetings Brazilian Orthopaedic Meeting and Brazilian Pediatric Orthopaedic Meeting were revised to evaluate presentations about clubfoot treatment (Ponseti and surgical). Difusion is also discussed in other countries, non governamental organizations, related to parents perspective, and related to costs of treatment. Difusion of Ponseti Method is considered in expansion phase, and its discussion can help in the incorporation of this tecnology into the SUS (Sistema Único de Saúde-Brazilian Health System).