The scientific committee organized a program ranging from basics to the more recent evolutions. It will provide current concepts and guidelines to optimize your daily practice. Topics: • Surgery for unicompartmental arthritis • Difficult primary TKA • Multiligament injuries • Update on cartilage repair During 4 days, we will share knowledge and experience with lectures, « how I do » sessions, debates, hot topics, relive-surgeries and a large room for discussions. This 7th issue will have new developments: • A red line about trap and tricks. • Enlarged session for selected clinical cases proposed by participants. You’ll take benefit from the presence of Myles COOLICAN (Australia), Roland BECKER (Germany) and many others famous experts coming from Europe and oversea. They will ensure a high scientific level.