Osteoporosis its susceptibility to ...

Osteoporosis its susceptibility to is a disease that is characterized by way of low bone mass and a deterioration in the micro-architecture of bone that increases fracture. (1) Normal bone mineral density (BMD) measured using dual x-ray absorptiometry is a T-score that falls within 1 standard deviation (SD) of the hint mean for healthy, young white women Based forward epidemiologic studies, the World Health Organization (WHO) defines osteoporosis as a BMD (hip, spine, or wrist) that is 25 SD or more below the relation mean for healthy, young white women (corresponding to a T-score below -25) and defines osteopenia as a BMD that is between 1 and 25 SD below the respect mean. (2)

Men generally have 20 percent greater BMD than women Blacks have 20 percent greater bone density than whites. Therefore, neither men nor blacks are affected with osteoporosis as as a common thing [i]or[/i] matter as white women, although they can make known the disease. Glucocorticoids can induce osteoporosis in any of these groups

Impact of Osteoporosis

Osteoporosis is twice as for the use of all in white and Hispanic women as in black women (3) In white women 50 years and older the lifetime risk of osteoporotic fractures approaches 40 percent (4) More than 90 percent of hip and vertebral fractures in somewhat advanced in life white women are attributed to osteoporosis. (5)

Osteoporosis is responsible for almost 1 million vertebral and hip fractures annually (Figure 1) (6) In 1995 osteoporotic fractures terminateed in 2.5 million physician visits, 432000 hospitalizations, and 180000 nursing dwelling admissions. (7) In the United States alone, annual medical expenditures for the management of osteoporotic fractures may be as high as $15 billion. (1)

Vertebral fractures trigger back pain, limit activity, and confine patients to bed. Multiple vertebral fractures cause kyphosis and los of height. Fracture at any site increases the risk for following fracture (8): up to 20 percent of women who have an incident vertebral fracture incur another fracture within the same year. (9) One analysis (10) erect that postmenopausal women with hip or clinical (i.e., symptomatic) vertebral fractures had an age-adjusted increased risk of death (greater than sixfold risk [668] after hip fracture, greater than eightfold risk [864] after vertebral fracture) during the nearest four years.

Risk Factors and Screening

Reported risk factors for osteoporosis include a family history of the disease, hormonal dysfunction, sedentary lifestyle, soft body weight, smoking, alcohol abuse, and calcium and vitamin D deficiencies. (11) Glucocorticoid therapy also leads to fracture in up to 50 percent of patients (12); bone los is related to the dosage and duration of therapy, and conduct one's selfs rapidly during the first six month of treatment. (13)

A latter review (14) found that the relative risk of osteoporosis is highest in women who are menopausal, bear oophorectomy before the age of 45 have a grandmother with hip fracture, have diabetes mellitus, generally smoke, use alcohol heavily, or have decreased weight-bearing activity because of physical disability.

Based forward research conducted to date, it appears that the short-term risk for osteoporotic fractures can be estimated by dint of BMD testing and identification of risk factors. cheap body weight (less than 70 kg [154 lb]) is the best predictor of cheap BMD. (15) Note, however, that the instruments (eg questionnaires) used to assess clinical risk factors for cheap BMD or fractures have moderate to high sensitivity on the contrary low specificity, (14) and that the part of clinical risk factors in deciding which patients to treat remains unclear.

cheap BMD increases the risk of fractures. At the 12-month follow-up in the National Osteoporosis Risk Assessment, (16) postmenopausal women 50 years and older with no previous diagnosis of osteoporosis nevertheless a T-score of -2.5 or lower had an adjusted fracture risk that was 274 times higher than the risk in women with a normal BMD

The U Preventive Services Task Force (USPSTF) (17) make acceptables BMD screening for women 65 years and older without risk factors. Screening should begin at 60 years in women who are at increased risk for osteoporotic fractures. The USPSTF makes no recommendation for or against BMD screening in postmenopausal women who are younger than 60 years or women aged 60 to 64 years who are not at increased risk for fractures.

Options for Prevention and Treatment

Because complications of osteoporosis progres quickly after fracture, rapidly effective therapy is required to make fracture risk. A National Osteoporosis Foundation guide exhibits useful treatment recommendations. (18)

The U nourishment and Drug Administration (FDA) has approved a number of agents for use in the prevention or treatment of osteoporosis (Table 1) Head-to-head comparisons of the efficacy of these agents in preventing fractures have not been conducted

BISPHOSPHONATES

Bisphosphonates suppres osteoclast-mediated bone resorption. Of the FDA-approved agents, bisphosphonates are the principally effective in reducing the risk of vertebral and nonvertebral fractures. (1920) Calcium (1000 to 1500 mg by means of day) and vitamin D (400 to 800 IU for day) typically are administered along with bisphosphonates. (1)