SPEAKER_03 48:50–49:18
Let's be really clear, relative to the sacrum. We want to have a point of reference. We need a frame of reference to understand the relationship. Because if I just said, 'posterior orientation,' what if that's my thought process? And this doesn't really happen. But that would be my thought process if I don't understand, right? If you just go, 'Let's just posterior orientation of the ilium.' Is that posterior orientation of the ilium? It's not, which direction did it go, boss? Posterior orientation relative to what? Relative to what? You see, it's like, I just said posterior orientation and I did that. And you go, 'Well, that's not posterior orientation because I didn't move the sacrum.' But see, you didn't make the point that you were talking about relative to the sacrum. I was just talking about relative to the vertical. Right? So again, what's our point of reference? If we don't have a frame of reference, we have no idea what we're talking about.
anatomysacrumframe of referencebiomechanicsilium