Knees Archive

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 2024 study found that low-dose aspirin therapy was more effective than taking anticoagulants for reducing the risk of blood clots following a total knee replacement surgery. Aspirin therapy also caused fewer bleeding complications.

Regular exercise and stretching can reduce knee pain related to some common conditions. Exercises that strengthen muscle groups in the upper and lower legs, hips, and core can help them better support the knee and improve movement. Strength-building exercises should be done at least two days a week, and stretches should be performed daily.

Losing 5% of one's total body weight can result in clinically significant physiologic changes. For example, losing a little weight can reduce heartburn, knee pain, blood pressure, and diabetes risk. Losing 5% of one's body weight may also lead to better sexual function, more restorative sleep, extra energy, and more self-esteem. To reach a 5% reduction in total body weight, it helps to exercise; eat a healthy diet rich in lean proteins, whole grains, fruits, vegetables, legumes, nuts, and seeds; and get enough sleep.

Certain activities like running, stair climbing, or kneeling may lead to knee pain. But evidence suggests that regular activity or exercise is unlikely to cause actual knee damage. Learn how to keep active and avoid knee pain.

It's important to ask many questions before getting a knee replacement. Suggestions include asking about a surgeon's background, the type of prosthetic that will be used, the surgical approach the doctor will take, how to prepare physically before surgery, how to prepare one's home for recovery, how long the hospital stay will last, how much pain the knee replacement will cause, what rehabilitation after surgery will entail, how long recovery will last, how long it will be until one can resume activity, and how long the new knee will last.

It's easy to blame running when a person who runs regularly develops arthritis. But that blame may be misguided. Here's a look at the latest research on the topic.

Staying active when knee osteoarthritis flares helps the joint stay flexible. But activity should be modified to take pressure off the knee. That could mean walking instead of running, or playing pickleball instead of tennis. Other activities that are easy on the joint include riding a stationary bike, using an elliptical machine, practicing yoga, swimming, walking pain-free distances on flat terrain, doing upper body strength training, or core strengthening. Warming up before activity helps to loosen stiff knee joints.

People with knee arthritis who don't feel ready for joint replacement can take a number of steps as they ponder the possibility. These include getting knee injections or wearing a brace to reduce pain, modifying activities (such as exercise) that aggravate knee pain, losing weight to take pressure off the knee joint, exercising more to help with weight control, seeking physical therapy, getting underlying health conditions under control, doing research about knee replacement, and talking to an orthopedic surgeon.