Category: O

A disease of a group in which bones increase in density. Osteopetrosis is a rare hereditary disorder that is caused by a deficit in bone resorption and results in abnormally dense bones that are nonetheless fragile and brittle. The primary underlying mechanism involved in osteopetrosis is due to defects in osteoclasts, which are specialized cells…

A benign tumour in a bone. A benign bone tumor that may be found in any bone in the body and that usually produces a painless swelling. A surgical procedure may be necessary to treat the condition. A benign bone tumor. A cancellous osteoma (exostosis) is an outgrowth from the end of a long bone,…

A congenital condition in which bones are brittle and break easily due to unusual bone formation. Osteogenesis imperfecta is a genetic disorder characterized by bone fragility, which is caused by defective synthesis of Type I collagen. There are primarily four types of osteogenesis imperfecta that vary in their clinical presentation. The disorder’s clinical manifestations generally…

A bone disease, especially one caused by disorder of the metabolism. Abnormal bone development, encompassing bone defects observed in conditions like rickets, dwarfism, and similar disorders.  

A usually benign tumour occurring at the ends of long bones. A rare tumor of bone, caused by proliferation of osteoclast cells. A benign giant-cell tumor originating in bone that is considered non-threatening but has the potential to reappear after surgical removal.  

A disorder of cartilage and bone formation which affects the joints in children, causing pain and a limp, probably due to circulation disturbances to that part of the bone. Degeneration and necrosis of the growth center of bones. A chronic condition, also called osteochondritis, in children involving inflammation and deformity of growing bone. It is…

A tumour containing both bony and cartilaginous cells. A noncancerous, tumorlike lesion formed by a bony protrusion covered with cartilage. Osteochondroma, which is most common in people younger than 20, may form as a single lesion or as several lesions that are painless and slow growing. Sometimes the protrusions appear after an injury. They most…

A painful condition where pieces of articular cartilage become detached from the joint surface. A condition that develops from stress fractures of the underlying cartilage of a joint, often the knee, elbow, or ankle. A condition that develops from stress fractures of the underlying cartilage of a joint, often the knee, elbow, or ankle joint.…

A surgical operation to remove the articular end of a bone. Surgical excision of the bone adjoining a joint. The surgical removal of the tip of a long bone.