Dr. Or is an Orthopedic Oncology surgeon and a Bone Biology specialist. He completed his residency program at the Hebrew University Hadassah Medical centers, Jerusalem, Israel. His Fellowship training was at Memorial Sloan Kettering Cancer Center, NY, NY and his Metabolic Bone Diseases Fellowship training was under the supervision of Dr. Jospeh Lane at Hospital for Special Surgery, NY, NY. He is a member of the Israel Orthopedic Association and Fragility Fracture Network. He works at Hadassah Medical Centers as the director of the Orthopedic Oncology and Bone Biology service and his subjects of interest are muscolo- skeletal tumors, rare skeletal diseases, fragility fractures, fracture liasion Service and innovative and navigation guided surgeries. He has presented in several international conferences and is conducting clinical and basic science research focusing on Sarcoma and fragility fractures.