| bone cysts, aneurysmal | Solitary lesions of bone that typically cause a bulging of the overlying cortex bearing some resemblance to the saccular protrusion of the aortic wall in aortic aneurysm, hence the name. (12 Dec 1998) |
|---|---|
| bone demineralization, pathologic | Decrease, loss, or removal of the mineral constituents of bones. Temporary loss of bone mineral content is especially associated with space flight, weightlessness, and extended immobilization. Osteoporosis is permanent, includes reduction of total bone mass, and is associated with increased rate of fractures. Calcification, physiologic is the process of bone remineralizing. (12 Dec 1998) |
| bone demineralization technique | Removal of mineral constituents or salts from bone or bone tissue. Demineralization is used as a method of studying bone strength and bone chemistry. (12 Dec 1998) |
| bone density | Bone density is the amount of bone tissue in a certain volume of bone. It can be measured using a special X-ray called a quantitative computed tomogram. (12 Dec 1998) |
| bone development | Gross development of bones from foetus to adult. It includes osteogenesis, which is restricted to formation and development of bone from the undifferentiated cells of the germ layers of the embryo. It does not include osseointegration. (12 Dec 1998) |
| bone dry | Having zero percent moisture content. Wood heated in an oven at a constant temperature of 212 degrees F or above until its weight stabilises is considered bone dry or oven dry. (05 Dec 1998) |
| bone dry unit | A quantity of wood residue which weighs 2,400 pounds at zero percent moisture content. (05 Dec 1998) |
| bone flap | Portion of cranium removed but left attached to overlying soft tissue structures. (05 Mar 2000) |
| bone forceps | A strong forceps used for seizing or removing fragments of bone. (05 Mar 2000) |
| bone: gallium imaging | <radiology> Increased activity in: active osteomyelitis (90% sensitivity: better than Tc-99m MDP), sarcoma, cellulitis, septic arthritis, rheumatoid arthritis, Paget disease, metastases (65% sensitivity: than for bone agents) see: gallium: indications (12 Dec 1998) |
| bone Gla protein | <protein> Polypeptide of 50 residues formed from a 76-77 amino acid precursor and found in the extracellular matrix of bone. Binds hydroxyapatite. Has limited homology of its leader sequence with that of other Vitamin K dependent proteins such as prothrombin, Factors IX and X and Protein C. (18 Nov 1997) |
| bone graft | Bone transplanted from a donor site to a recipient site. See: osteoplasty. (05 Mar 2000) |
| bone infarct | An area of bone tissue that has become necrotic as a result of loss of its arterial blood supply. (05 Mar 2000) |
| bone island | <radiology> Small, intramedullary island of compact bone, usually negative on bone scan, shaggy, slightly stellate border, Differential diagnosis: osteoid osteoma, multiple leading to osteopoikilosis (12 Dec 1998) |
| bone lengthening | Increase in the longest dimension of a bone to correct anatomical deficiencies, congenital, traumatic, or as a result of disease. The lengthening is not restricted to long bones. The usual surgical methods are internal fixation and distraction. (12 Dec 1998) |