Although there are several conditions which may lead to the need for knee replacement, arthritis (whether it be osteoarthritis, rheumatoid arthritis or traumatic arthritis) is the most common reason. A number of other factors contribute to joint disease including genetics, developmental abnormalities, repetitive injuries and obesity.
According to the National Osteoporosis Foundation, the best exercises for building and maintaining bone density are: 1  Weight-bearing exercise, such as walking, that makes you work against gravity while staying upright.hese studies show that people with higher levels of vitamin D have... Although people with osteoporosis may believe that exercise increases the risk of injury from broken bones, the truth is quite the opposite.
Read more about the types of exercise you can do to prevent osteoporosis and lower your risk of falls. Although a diagnosis of osteoporosis is based on the results of your bone mineral density scan (DEXA or DXA scan), the decision about what treatment you need â if any â is also based on a number of other factors.