Osteoporosis is a disease of bone where there is reduced bone mineral density, increasing the likelihood of fractures. Osteoporosis is defined by the World Health Organization in women as a bone mineral density 2.5 standard deviations below peak bone mass, relative to the age and sex-matched average, as measured by Dual energy X-ray absorptiometry, with the term "established osteoporosis" including the presence of a fragility fracture. Osteoporosis is most common in women after menopause, when it is called "postmenopausal osteoporosis", but may develop in men and premenopausal women in the presence of particular hormonal disorders and other chronic diseases or as a result of smoking and medications, specifically glucocorticoids. Osteoporosis usually has no symptoms until a fracture occurs. For this reason, DEXA scans are often done in people with one or more risk factors, who have developed osteoporosis and be at risk of fracture.. A human is able to survive with just the axial portion of their skeleton.. You can find these joints at your shoulders and hips. At the end of the radius and ulna are eight smaller bones that make up your wrist. the ball and socket joint allows a greater range of movement than the pivot joint at the neck. The human skeleton can be divided into the axial skeleton and the appendicular skeleton. But the main part of the foot is similar to the hand, with five bones.
Contents 1 Divisions 1.1 Axial skeleton 1.2 Appendicular skeleton 2 Functions 2.1 Support 2.2 Movement 2.3 Protection 2.4 Blood cell production 2.5 Storage 2.6 Endocrine regulation 3 Sex differences 3.1 Skull 3.2 Dentition 3.3 Long bones 3.4 Pelvis 4 Clinical significance 4.1 Arthritis 4.2 Osteoporosis 5 History 6 See also 7 References . The rib cage, spine, and sternum protect the lungs, heart and major blood vessels. This brings the bone total in both feet and ankles to 52! Most people don't use their toes and feet for grabbing stuff or writing, but they do use them for two very important things: standing and walking. The cartilage in the affected joints will degrade, soften and wear away. In general, female skeletal elements tend to be smaller and less robust than corresponding male elements within a given population. Divisions. "A newly developed visual method of sexing the os pubis". World Health Organization technical report series 843: 1129. Their functions are to make locomotion possible and to protect the major organs of digestion, excretion and reproduction.
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