Hip Flexibility: Femur Neck Angle & Splits Anatomy (2-Min)

Now what I'd like to examine are other variations that occur in the femur bones, not just the twist or the rotation of the shaft. If I look at these two femur bones, these are also right femur bones, but what we're looking at now is the difference of the slant of the neck of them. If I first look at this one, and I orientate the knee properly, then how steep is this angle? If I compare how steep this angle is to how steep that angle is, there's nearly a 40 degree difference here.

If everything else about these two femurs, or these two human skeletons, had been the same, just that alone would have made a huge difference in how safely and effectively they could do certain yoga postures. For example, how soon would the trochanter hit against the lip of the hip socket or another bone of the pelvis when abducted out to the side, as in splits? In this case, the flat angle of the neck, if this were the imaginary orientation of my hip or socket or my pelvis bone, now as this yogi starts to split the legs, how high up will that yogi go with the femur? How wide will the splits be before compression?

It may not hit bone on bone, but it'll pinch tissue so much that eventually it can't rise up anymore. What is this angle? Well, in this imaginary instance, the angle is nearly horizontal. Now, I get the steeper angled femur bone and put it against the imaginary plane of this hip socket.

Because the neck on this femur is steeper, this yogi is going to go at a much steeper angle of splits to the side before compression would occur. So because the angle of the necks of the femurs are different, these two practicing yogis, as they try to stretch out their muscles and connective tissue to get into the side splits, is going to hit well before this yogi in my right hand does. They both eventually find compression, but the angle of how wide they can split their legs will be very, very different, and yoga won't change this.