Knee pain is the most common muscle and joint ailment that brings people to the doctor. It affects about 25% of U.S. adults. Knee pain may be the result of an injury, overuse, or medical ...

The vastus medialis, otherwise known as the vastus medialis oblique (VMO), is a teardrop-shaped muscle in the front of your thigh that helps extend the knee and stabilize the kneecap. It is one of the ...