Osteoporosis is a bone disease that is defined by low bone density and loss of bone tissue, which puts one at an increased risk of fracture particularly of the spine, hips, and wrists. This can occur when not enough new bone is formed or when old bone is reabsorbed too quickly. In either case an imbalance between bone formation and bone resorption occurs.
Osteoporosis can be classified as primary type I, primary type II, or secondary. Primary osteoporosis type I is most commonly seen in women following menopause. Primary type II is found in men and women over the age of 75, but is two times more prevalent in females. Secondary osteoporosis can be found in people of any age and is caused by underlying medical problems or prolonged use of medications such as steroids. Secondary osteoporosis can be found equally in men and women.
Nearly 10 million people in the United State have osteoporosis and 18 million more have low bone mass, which puts them at an increased risk of developing osteoporosis at a later time. Approximately 55% of adults over the age of 50 have osteoporosis. 80% of those are women. In people over the age of 50, it is estimated that one in eight men and one in two women will suffer a fracture related to osteoporosis at some time in their life.
There are many risk factors for the development of osteoporosis.
There are also many disease processes and medications that cause the development of secondary osteoporosis.
A doctor will begin with a detailed medical history to identify family history and risk factors that may predispose you to the development of osteoporosis. In addition blood work may be performed to identify possible underlying causes. Some of the things that may be measured are calcium, phosphorus, vitamin D, testosterone, and thyroid and kidney function. The doctor will also order imaging. The gold standard test for diagnosing osteoporosis is dual-energy x-ray absorbtiometry (DXA). This test measures the bone mineral density of the spine, hips, or total body.
Prevention of osteoporosis includes lifestyle modification, nutritional changes, fall prevention, and the use of medications. Lifestyle changes include smoking cessation, decreasing alcohol intake, eating a well balanced healthy diet, and participating in exercise. Weightbearing endurance exercise along with resistance exercises to strengthen the muscles can improve the strength of the bones. Exercise also strengthens weak muscles that can improve balance and stability with activities of daily living, which can reduce the chance of falling and fracture. Nutritional changes include supplementation of vitamin D and calcium. Medications are also important in the management of osteoporosis. Biphosphonates, which slow the bone breakdown process, are the most commonly prescribed medications in the management of osteoporosis. These include Fosamax, Actonel, Atelvia, Boniva, Reclast, and Zometa. Hormones such as estrogen and testosterone are sometimes used in the treatment as well.
If you have osteoporosis or believe that you may be at risk, consult your physician for evaluation. A physical therapist can evaluate you and design a customized exercise program. Physical therapy can teach you proper body mechanics, improve your balance and proprioception to decrease the risk of falls, teach fall prevention techniques for home and work, and identify exercises that address your problem areas and strengthen your muscles and bones.
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