Dr. Seyed Hamid Reza Modaresnejad 1-Clinical fellowship for upper extremity tumor surgery, New Jersey University, Hackensack, USA 2-Clinical fellowship for bone and soft tissue tumor surgery, Rizzoli orthopedic institute, Italy 3-Clinical fellowship for spine tumor surgery, Wiesbaden, St Josef hospital, Germany 4-Research fellowship for lower extremity and pelvic tumors, Washington musculoskeletal tumor center, America 5- Tumor surgery course Bones and Soft Tissues, Shafa Yahian Hospital, Iran University of Medical Sciences 6- Specialized Course, Orthopedic Specialist Board, Iran University of Medical Sciences 7- Active and official member of the American Association of Tumor Surgeons 8- Member of the Italian and European Association of Tumor Surgeons Tumor diagnosis and sampling services under sonography and CT scan guidance for various types of tumors of the upper and lower limbs and the spine with a focus on preserving the limb and its function Surgery for complex pelvic tumors together with the vascular surgery team for spine tumor surgery Together with the neurosurgery team, continue treatment after surgery with the best oncology team of hip and knee surgery and joint replacement with the team of knee and hip surgery, cell therapy, PRP and ozone therapy. See more...