Avascular Necrosis Glossary of Terms

The following are health and medical definitions of terms that appear in the Avascular Necrosis article.

Abnormal: Outside the expected norm, or uncharacteristic of a particular patient.

Adjacent: Lying nearby. Related terms include superjacent, subjacent, and circumjacent. Fr...

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Ankle: The ankle joint is complex. It is made up of two joints: the true ankle joint and ...

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Aseptic: The absence of microorganisms. By contrast, something that just discourages the g...

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Aseptic necrosis: Condition in which poor blood supply to an area of bone leads to bone de...

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Avascular necrosis: A condition in which poor blood supply to an area of bone leads to bon...

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Bisphosphonate: A class of drugs used to strengthen bone. Bisphosphonates are used to trea...

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Bone marrow: The soft blood-forming tissue that fills the cavities of bones and contains f...

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Bone scan: A nuclear medicine technique for creating images of bones on a computer screen ...

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Bowel: The small and large intestine.

Calcium: A mineral found mainly in the hard part of bones, where it is stored. Calcium is ...

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Cancer: An abnormal growth of cells which tend to proliferate in an uncontrolled way and, ...

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Cell: The basic structural and functional unit of any living thing. Each cell is a small c...

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Chemotherapy: 1. In the original sense, a chemical that binds to and specifically k...

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Cholesterol: The most common type of steroid in the body. Cholesterol has a reputation for...

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Circulation: In medicine, the movement of fluid through the body in a regular or circuitou...

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Decompression: 1. In general, the removal of pressure.
2. In surgery, ...

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Diabetes: Usually refers to diabetes mellitus or, less often, to diabetes insipidus. Diabe...

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Diagnosis: 1 The nature of a disease; the identification of an illness. 2 A ...

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Elbow: The juncture of the long bones in the middle portion of the upper extremity. The bo...

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Essential: In medicine, of unknown cause, as in essential hypertension (high blood pressur...

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Extremity: An uttermost part of the body, such as a hand or a foot.

Fats: Plural of the word "fat". See the definition of fat.

Femur: The single bone in the thigh, which is the largest bone in the human body. Also kno...

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Fracture: A break in bone or cartilage. Although usually a result of trauma, a fracture ca...

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Glucocorticoid: A hormone that predominantly affects the metabolism of carbohydrates and, ...

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Groin: The area where the thigh meets the hip.

Inflammatory bowel disease: A group of chronic intestinal diseases characterized by infla...

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Injury: Harm or hurt. To harm, hurt, or wound. The word injure may be in physical or emot...

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Jaw: The movable junction of the bones below the mouth (the mandible) and the bone just ab...

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Joint: The area where two bones are attached for the purpose of permitting body parts to m...

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Knee: The knee is a joint which has three parts. The thigh bone (the femur) meets the lar...

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Leukemia: Cancer of the blood cells. Strictly speaking, leukemia should refer only to canc...

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Lipids: Another word for "fats." (Please see the various meanings of Fat.) Lipids can be m...

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Lupus: A chronic inflammatory disease that is caused by autoimmunity. Patients with lupus ...

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Magnetic resonance imaging: A procedure that uses magnetism, radio waves, and a computer t...

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Marrow: The bone marrow.

MRI: Magnetic resonance imaging.

Necrosis: The death of living cells or tissues. Necrosis can be due, for example, to ische...

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Osteonecrosis: Bone death resulting from poor blood supply to an area of bone. Also known...

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Osteoporosis: Thinning of the bones, with reduction in bone mass, due to depletion of calc...

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Pain: An unpleasant sensation that can range from mild, localized discomfort to agony. Pa...

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Pregnancy: The state of carrying a developing embryo or fetus within the female body. Thi...

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Prognosis: The forecast of the probable outcome or course of a disease; the patient's chan...

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Radiation: 1. Rays of energy. Gamma rays and X-rays are two of the types of energy ...

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Scan: As a noun, the data or image obtained from the examination of organs or regions of...

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Shoulder: A structure made up of two main bones: the scapula (shoulder blade) and the hume...

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Sickle cell disease: A genetic blood disorder caused by the presence of an abnormal form ...

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Stage: As regards cancer, the extent of a cancer, especially whether the disease has spre...

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Steroid: One of a large group of chemical substances classified by a specific carbon struc...

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Surgery: The branch of medicine that employs operations in the treatment of disease or inj...

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Symptom: Any subjective evidence of disease. In contrast, a sign is objective. Blood comin...

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Systemic: Affecting the entire body. A systemic disease such as diabetes can affect the wh...

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Systemic lupus erythematosus: A chronic inflammatory condition caused by an autoimmune di...

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Thalassemia: A group of genetic disorders that involve underproduction of hemoglobin, the ...

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Trauma: A physical or emotional injury.

Triglycerides: The major form of fat stored by the body. A triglyceride consists of three ...

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Vasculitis: A general term for a group of uncommon diseases that feature inflammation of t...

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Wrist: The part of the hand that is nearest the forearm and consists of the carpal bones a...

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X-ray: High-energy radiation with waves shorter than those of visible light. X-ray is used...

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Medical Dictionary