But when not under pressure, his knees could bend almost all the way.

Did the knees bend before the hip or beyond it?

Sam tried his leg and found he could use it, though the knee wouldn't bend.

I made them run around the block four times and do some knee bends before they had to report for examination.

As he did so, she let her knees bend and folded herself backward, down to the ground.

As the knees bend during landing, make sure they travel in a straight path.

Then on the recovery, push the hands forward, lean in and bend the knees.

By morning, the knee will be swollen to balloon size and won't bend.

We cannot do exactly what you have done, because our knees do not bend in that direction.

The elevator stopped with a hard thud that made my knees bend.