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Osteopenia and osteoporosis both involve a decline in bone density. Osteoporosis is more severe, significantly increasing the risk of fractures. Both conditions can be diagnosed with DEXA scanning, which measures calcium and other minerals in bone.

Older adults with greater joint flexibility had a lower risk of death than those with less flexibility. Increased flexibility can improve mobility and reduce pain, which may keep people active and help them stay healthier.

Braces help some people cope with the pain, swelling, and stiffness of knee osteoarthritis. Examples include a knee sleeve, a compressive or stretchy tube that provides warmth and might help reduce knee swelling; an unloader brace, a long frame that fits on top of the leg and helps reduce pain by redistributing pressure on the knee; and a patella tracking brace, which combines the approaches of both knee sleeves and unloader braces to reduce knee pain, swelling, and pressure at the kneecap (patella).

A three-move routine—arm sweep, back bend, and chair pose—can help loosen stiff muscles in the shoulders, back, and legs.

Annually, about 790,000 Americans (about 60% women) undergo knee replacement surgery. Women are more likely to have arthritis, the main culprit leading to most knee replacements. Before surgery becomes an option, people first need to try conservative treatments such as pain relievers, injectable medications, and physical therapy. Signs a knee replacement may be necessary include pain that hinders people from doing basic activities, unstable walking, and needing multiple medications to function.

Cold weather can lead to stiff, sore muscles. To avoid that, it helps to perform two types of stretches. One type is called dynamic stretching. It involves flowing, repetitive motions that prepare muscles for activity by getting blood, oxygen, and heat to them. The other type is called static stretching. It involves holding a certain position for 20 to 30 seconds, which gently lengthens the muscles to keep them flexible. Static stretching should be performed only after the muscles are warmed up.