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 ...

When things are in the groove, they’re going smoothly. That surely is the case with your knee. As long as your kneecap (patella) stays in its groove in the knee, you can walk, run, sit, stand, kneel, ...