Osteosarcoma: A type of cancer that originates in the bone. Proximal Humerus: The upper part of the arm bone near the shoulder. Biofeedback therapy: A pain management technique that teaches control over involuntary bodily processes. Prosthetic limb technology: The use of artificial limbs to replace those amputated due to injury or illness. Physical therapy: A branch of rehabilitative health that uses specially designed exercises and equipment to help patients regain or improve physical abilities. Occupational therapy: Therapy based on engagement in activities of daily living which is critical for people recovering from injuries to regain skills. Targeted therapy: Cancer treatment that uses drugs to target specific genes and proteins involved in the growth and survival of cancer cells. Hormone therapy: Treatment that adds, blocks, or removes hormones to slow or stop the growth of cancer cells that rely on hormones to grow. Stem cell therapy: A treatment that uses stem cells to repair or replace damaged cells or tissues. Precision medicine: An approach to patient care that allows doctors to select treatments that are most likely to help patients based on a genetic understanding of their disease.