Prof. Stefano Zaffagnini is a Full Professor of Orthopedics at the University of Bologna. He is currently the Director of the Complex Structures II Orthopedics-Trauma Clinic. In 1987, he received his MD degree from the University of Bologna. In 1992, he received a degree in “Orthopedics and Traumatology” from the University of Bologna. Since 1997, he has served as First Assistant Orthopedic Surgeon at the Sports Traumatology Department of the Rizzoli Orthopedic Institute. As of 31 August 2011, he had performed 8000 surgical procedures as the first surgeon. His clinical and/or scientific interests include sports traumatology, cartilage pathology, arthroscopic and replacement surgery of the shoulder, knee, and hip, biomechanics, computer-assisted surgery, biologic joint reconstruction, and meniscal transplantation.