<p>Being obese or overweight can make osteoarthritis worse. Staying physically active is one of the best ways to avoid putting on extra pounds. However, many osteoarthritis patients remain inactive.</p><p>These findings suggest that there may be a serious need to improve physical activity among patients with knee osteoarthritis. According to the authors, increasing physical activity among these patients will likely involve weight management, healthy diet and improving pain and disability.</p>