Prof. Dr. Michiel A.J. Van de Sande is a professor of orthopedic oncology, in particular pediatric orthopedic oncology, at the orthopedics department at the LUMC and works as an oncological pediatric orthopedic surgeon at the Princess Maxima Center for Pediatric Oncology. He completed his medical training at the University of Utrecht and his training as an orthopedic surgeon and his PhD research at the University of Leiden. He is the Chairman of the Bone Tumors and Infection Working Group of the EPOS and a board member of the Dutch Sarcoma Group, FOSTER EuroEwing, and the EMSOS. His surgical specialty focuses on the treatment of pediatric, AYA, and adult patients with bone and soft tissue sarcomas. Within the LUMC cancer research line, his research within oncological orthopedics focuses on (inter)national collaborations, such as multicenter studies on giant cell tumors of the joint and bone, soft tissue sarcomas, chondrosarcomas, adamantinoma, and osteo- and Ewing sarcomas.