Knee injuries may be due to a variety of reasons. In some cases, pain is due to the kneecap going 'off track'. One way to check if that is your case is to stand, with your feet hip width apart and lift your kneecaps. Do they move straight up? Or to the sides? If that is the case, you probably need to strengthen your inner quadriceps. Véronique will show you how to first warm up your knee joints, locate your inner quadriceps and then strengthen them to ensure your knee cap doesn't go off track.