- Reduction of bone mass without alteration in the composition of bone, leading to fractures. Primary osteoporosis can be of two major types: postmenopausal osteoporosis (osteoporosis, postmenopausal) and age-related or senile osteoporosis.
Definition from: MeSH via Unified Medical Language System at the National Library of Medicine
- Loss of bone mass and strength due to nutritional, metabolic, or other factors, usually resulting in deformity or fracture; a major public health problem of the elderly, especially women.
Definition from: CRISP Thesaurus via Unified Medical Language System at the National Library of Medicine
- RAEB: A condition of reduced bone mass, with decreased cortical thickness and a decrease in the number and size of the trabeculae of cancellous bone (but normal chemical composition), resulting in increased fracture incidence. Osteoporosis is classified as primary (Type 1, postmenopausal osteoporosis; Type 2, age-associated osteoporosis; and idiopathic, which can affect juveniles, premenopausal women, and middle-aged men) and secondary osteoporosis (which results from an identifiable cause of bone mass loss).
Definition from: NCI Thesaurus via Unified Medical Language System at the National Library of Medicine
- A condition that is characterized by a decrease in bone mass and density, causing bones to become fragile.
National Cancer Institute
See also Understanding Medical Terminology.