This is my oldest daughter and as you can tell she is pretty upset about her painful knee. I can't exactly remember what it was that she did but it sure seems like it hurt! Whenever I see my kids cry you know what the first thing I think of is? Nope, I don't think about helping them. I think about how awesome it would be to have a VMO like this dude...
I guess it might be a good idea to explain why on earth I think about having super awesome legs while my kids are crying. Well here it goes. See that muscle right above the knee? That muscle is called the vastus medialis, sometimes referred to as the VMO which stands for vastus medialis oblique referring to the oblique or diagonal direction of the fibers that are just to the inside of the knee. If you look really carefully you can see that it sort of looks like a gigantic tear drop, right?
This muscle plays an important role in a client that comes to me with sore and painful knees. The VMO, along with the other three muscles in quadriceps, is responsible for extending the knee while walking, running, squatting, lunging, etc. It has a unique function in that right before the knee locks into position it keeps the patella inline with what is called the trochlear groove. It does this so that there is minimal amount of friction between the patella and the femur. When this muscle is dysfunctional there is an excessive amount of friction which causes pain and can eventually lead to arthritis. Here is what happens when there is a weak VMO and lack of knee stability...
Notice how this dude's right knee is just buckling inward like crazy? Part of this can be attributed to weakness in the muscles the surround the knee. You may even notice this happening to you. Here is an experiment. Stand in front of a mirror. Now place your hands on your hips and raise your left leg just off the ground. Next, begin to slowly squat down and watch what happens to your knee. Notice how it buckles inward? You may even lose your balance pretty quickly and have to hop around in order to stabilize yourself. Don't worry, this is actually pretty common. Here are a couple of things that you can do to strengthen the area around your knee.
1) Terminal Knee Extensions
2) Tube Walking
This is a great exercise because it will help improve stability at the knee via the hip area. Along with a weak VMO there is usually some weakness in the glutes. The glutes, primarily the gluteus medius, help to keep the knee from buckling inward by rotating the femur outward. Be sure to keep your feet facing straight ahead and not rotate outward. If you allow that to happen you are working your hip flexors more than the glutes! Here is an example of tube walking. I have my clients do this for about 20 steps to the left then 20 steps to the right for up to 3 sets...
3) Single Leg Squat Touchdown
The single leg squat touchdown is similar to the movement I had you try out to see if your knee moved inward. Now we are going to use it as an exercise. Stand on one leg with the other slightly elevated off the ground. The goal is to squat down and touch the floor. This can be pretty challenging so if you are not able to go all the way to the ground then just go half way. Maybe try touching your knee or the middle of your shin then progress to the floor as you get stronger. While doing this be sure to keep your knee over your second toe. This will ensure that your knee is aligned properly with the rest of your body. I would start with a couple sets of 10-15 reps on each side...
Doing these three exercise on a daily basis will start to improve your knee strength and stability. While these are fantastic exercises they are merely suggestions to help with a limited joint condition. Knee pain can stem from all sorts of crazy things. The best thing to do is find someone you trust that has the knowledge and ability to assess the joint and develop a safe and effective program to help you specifically!
Thanks for reading and have a great day!
Danny





