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BLACK SWAN IS APPARENTLY AMAZING, SOMEONE C/D

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Jimor:
Bird knees don't bend backwards (those are their ankles) </needlessly pedantic>

KharBevNor:


 :?

Then again, I found skeletal diagrams which suggest the opposite. Is there some disagreement on this issue, or is this image simply wrong?

pwhodges:


Also this one which says in the text that the knee is often got wrong!

Elysiana:
Well, on a human the tibia is your shinbone, and the tarsus is part of your foot. Your ankle falls between the two. So perhaps for birds and other animals they label it differently, but bone-wise their "knee" is your ankle.

<edit> Yes, on the one that pwhodges posted, you can see that the femur is actually up inside the body. The joint between the femur and the tibiotarsus/fibular is the knee. </edit>

Jimor:
Hmm, I could be wrong, but the skeletal structure of the foot in a lot of animals gets severely distorted. For example on dogs and cats, the "heel" doesn't touch the ground unless they're sitting. This diagram appears more clear that the femur/tibia connection is higher up, hence the knee is closer to the body.

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