If you suffer from achy joints, there’s a good chance your knees are one of the main culprits. It’s estimated that knee pain affects 25% of adults and is responsible for over 4 million primary care ...

Fitness coach Jeff Cavaliere knows that working out pain-free is critical to lasting progress. On Nov. 16, 2025, he broke ...

There are many different causes for knee pain when bending the leg. The location of pain and other symptoms can help differentiate possible causes, such as tendonitis, strains, or arthritis. The type ...

For someone dealing with unresolved or lingering knee pain, a leg day workout packed with high-impact moves, squats, and lunges can be, well, a little scary. That's because, according to Dr. Leada ...

Pain in the back of the knee when straightening the leg is called posterior knee pain. Finding the cause can be difficult as it can come from problems with the bones, muscles, tendons, ligaments, ...

Because of its complex range of motion and the weight that’s often distributed through the joint, the knee is vulnerable to injury. The knee is one of the most complex joints in your body. It can flex ...

If your knee hurts when you bend it, you may have an injury or another health condition. Depending on the underlying cause, the pain can range in location and intensity. Your knees bend many times ...

For on-demand lower-body workouts — plus fitness challenges, meal plans and inspiration — download the Start TODAY app! If you're walking, standing up from the couch or bending down to pick something ...

X-rays reveal hundreds of gold threads in a South Korean woman's knee left behind by acupuncture, raising safety concerns.