Bones and joints Archive

Inflammation is the body's response to an injury, allergy, or infection, a reaction that attempts to restore the health of the affected area. But that's only part of the story, because there are two types of inflammation, and it's important to know the difference-and what is and isn't true about all types.

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).

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.

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.

Strength is not only measured by how much weight a person can lift, but by how well they perform certain movements that are needed to help them stay active, mobile, and injury-free. Three tests that offer a good assessment of strength are grip strength, push-ups, and the sit-and-rise exercise. They can measure strength and highlight areas where people need to improve.

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.

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

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.

Osteopenia is the precursor stage to osteoporosis (weak, thin bones that break easily). Ways to treat osteopenia include taking medications that slow bone loss and reduce fracture risk, exercising, eating protein- and calcium-rich foods, taking a calcium supplement to make up for a lack of dietary calcium, taking a vitamin D₃ supplement to help absorb calcium, and avoiding excessive alcohol intake. Vibration therapy (standing on a small vibrating platform) is not yet proven to be effective.