Emus, like other birds, have a unique leg structure where their knee joint is not easily visible due to feathers and the positioning of their legs. While they do have a knee joint that functions similarly to other birds, their legs do not bend backwards like the hind legs of some mammals. Instead, what appears to be the "knee" is actually the ankle joint, which allows for their distinctive walking and running motion.
Mammals have a joint in the middle of the leg that is called a knee. In humans this joint allows the leg to bend backwards.
The emu is said to be unable to walk backwards.
Cowards Bend the Knee was created in 2003-02.
Emu kangaroo
No bone can bend one way. I think you meant which joint can only bend one way. For instance, the elbow and knee joints are classed as hinges, and tend to move forward and backwards like door hinges.
It means to bend your knee while supporting yourself with your other leg. Sometimes people “bend the knee” in prayer.
The Arrival and District 9 both feature aliens whose knees bend backwards, but in real life, camelids fron knees bend forward, and rear knees bend backwards
Bend Backwards- draw is ward in reverse(backwards)
I can't be sure, since "basic knee bend" isn't very exact. But most any knee bend in Ballet can be referred to as a plie. (pronounced plee-ay)
bend
Your knee allows you to walk and bend your leg.
You bend it backwards. Or bend it behind your back.