The Congress of International Society of Arthroscopy, Knee Surgery and Orthopaedic Sports Medicine (ISAKOS) occurs every two years in various parts of the world. This year’s edition will be held in June in Lyon. As a part of the Geistlich Satellite Symposia, dr Tomasz Piontek from Rehasport Clinic will present a treatment technique of large cartilage damage in the knee joint with the AMIC method, developed by his team. In order to make it more interesting, a slightly different technique will be presented by dr Justus Gille from Kiel. Whose method will convince the attendees from the whole world? We will find out on June 9.