SPEAKER_02 1:02:27–1:03:25
So I have to go below, so as I go down from the pelvis, that's where the IR is going to come from. I have to twist inward, inward somewhere. I have to go in, right? So as I go below the level of the trochanter, so I have that ER compression right at that trochanter that's pushing it forward, there's my no IR. But if I go below that, there's no muscle that twists the femur like the glute does, right? And so now I can start to turn that inward. So I take my big vastus lateralis, and I twist the femur, and I turn the femur inward, right? And that's how you get the patella to point in. That's how I get my little squinty patella, right? I turn them inward with the femur. But I have a knee joint that I'm going to hit right below the femur. I don't have the same force applied, so it's going to be in a relative position of ER. You see it?
hip internal rotationfemoral movementknee mechanicspatellar orientationvastus lateralis