0:00 What do you think most of that comes from? Knees move inward. What do you 0:04 think the biggest joint responsible for this is going to be? Hip, right. Yeah. We've 0:15 got a couple things going on at the hip. This one gets a little complicated. I'm 0:20 going to be honest with you, we'll start with the easy one. Knees moving 0:25 inward is what joint action? Adduction. 0:34 What muscles adduct my hip? 0:39 The adductors. Right? You knew that right? Sometimes we get a "give me" in the 0:44 whole functional anatomy game. You know, it's like, what is the levator scapulae 0:48 do? Uh, elevate the scapula? Sometimes we get "give me"s. Adductors. 1:01 However, here's where things get a little confusing. The other part that's causing 1:06 the knees to buckle in, and this is where it's also related to lower leg 1:09 dysfunction, is what my friend Rick likes to call the bowstring effect. The same 1:18 muscles that pull on the lateral knee, will also duck the knees in. You 1:27 kind of follow me? Here's the easy visual. So if these muscles right here 1:33 pull down this way, like the string on a bow and arrow, if these are on the 1:42 outside and I shorten that string, what's going to happen to the bow? It's 1:50 going to go that way, right? Can you kind of see that? If I drew my knee this 1:56 way, this is my femur, this is my knee, and this is my tibia. 2:07 I drew a little string right here. 2:11 I'm dramatizing. If I shorten this string, what happens to my knee? Can you see 2:19 that? What muscles pull on the outside of my knee? TFL. You're not done yet. 2:35 Short head of the biceps femoris. Why not the long head? 2:48 It's actually a little bit more complicated than that. So what ends up 2:50 happening is it's hip adduction and 2:56 internal rotation. 3:03 This is where things get even more complicated. Femoral internal rotation, 3:10 this is my femur, this is my tibia, this is my knee, if I have femoral internal 3:16 rotation, it is the same thing as tibial external rotation. So all of the muscles 3:23 that we listed for externally rotating the tibia, will also turn the femur 3:28 inward causing this. Are you with me there? So we did TFL, biceps femoris. The 3:39 reason why it's only the short head of the biceps femoris, is the long head of 3:43 the biceps femoris crosses the hip, right? Connects into my ischium. 3:48 What is my the long head of my biceps femoris do as a joint action at 3:54 the hip? It extends the hip and externally rotates. Are you with me 4:01 there? So the long head is actually long, and the short head is short. Darn, crazy 4:11 muscles. Make up your mind! One head's short, one head's long. But it's true. 4:17 So TFL, biceps femoris, possibly even what was the other external rotator of our knee? 4:29 Lateral gastroc, right? We could even, it's not on the next slide, 4:34 but we could even put lateral gastroc. 4:44 Crazy, huh? 4:48 Just gets wilder and wilder. So, if this is the case, adduction internal rotation, 4:55 what would our long muscles be? 5:08 My abductors and external rotators which are going to be, you already hit it, 5:15 who are my big abductor and external rotator? Glute what? Yes. My favorite 5:30 muscles. They are. They're my favorite muscles. Not saying necessarily visually, 5:39 although that's not bad either, but they do have extremely important functions. As 5:43 we start tracking up all of our dysfunctions, you will see the glute 5:47 max and glute med are almost always weak. And then we wonder why so many 5:51 people have droopy glute syndrome. You know droopy glute syndrome, right? No? 5:56 I know a couple of people in here are going, "uhg, droopy glute syndrome". So, what 6:06 would we do to these muscles? Activate, and then we would try to integrate. Okay. 6:16 One thing I need to 6:19 specify: we have to activate, and we have to isolate 6:25 and activate as much as we can. If you go, 'well I need stronger glutes', and you 6:30 decide that you don't do corrective exercise, you decide you're just going to 6:34 do squats to try to strengthen your glutes, is that going to work? Why isn't 6:40 it going to work? 6:45 You're going to continue using the compensation pattern you've always had. 6:49 You with me there? You can't control that. If your glute max and glute medius 6:56 is shut down because your knees duck in, your biceps femoris is going to take 7:00 over, this is something called synergistic dominance. 7:04 I don't care how many times you do squats, your glutes aren't 7:09 all of a sudden on your 15th squat going to go, "oh yeah I'm supposed to work now." 7:13 You've learned to this compensation pattern until you release and stretch 7:19 the short muscles, and activate these guys, they're not going to get involved. 7:24 You're just going to keep using that compensation pattern.
