Heterotopic ossification is a condition where bone forms in soft tissues where bone is not normally found. The word “heterotopic” means “in an abnormal place,” and “ossification” refers to the process of forming bone. In this condition, the body mistakenly creates bone tissue in areas such as muscles, tendons, ligaments, or skin, usually in response …
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An osteoblastoma is a rare non-cancerous bone type of bone tumour. These tumours usually range in size from about 2 to 5 cm but they can be much larger, up to 20 cm. They are most frequently found in the bones of the legs, feet, and spine, but other locations are possible. A tumour that …
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An osteoid osteoma is a common type of non-cancerous bone tumour. These tumours are usually small (less than 2 cm) and are most frequently found in the bones of the legs, arms, spine, hands, and feet. They generally occur in children and young adults but can occasionally be found in older adults. The most common …
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Osteosarcoma is a type of bone cancer and the most common type of sarcoma to start in bone. It usually affects teenagers and young adults, although it can also occur in older adults. The most common location for osteosarcoma is the long bone of the thigh, called the femur, but it can develop in any …
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Osteoid is the soft, unmineralized material that forms the first step in the process of making new bone. It is produced by specialized bone-forming cells called osteoblasts, which are found inside bones. Osteoid serves as the scaffold that becomes hardened bone after minerals such as calcium and phosphorus are added. Under the microscope, freshly made …
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