An injured left knee has kept him out of 22 of Denver's 39 games this season.

His fragile knees kept him from answering with his play that everything was now all right.

He returned a minute later to say the goals were flukes and that the knee would not keep him out of the game Thursday night.

Jeter said his knee was still sore, but that alone would not keep him from returning.

He had to hold me up more than once along the way, because my knees kept giving out.

Ransom was all goose flesh, and his knees kept getting in each other's way.

He sagged into a chair, as though his knees would no longer keep him on his feet.

Aching knees and an aging body may keep her in retirement for good.

Al, a dedicated amateur like me, was "very depressed" when his knee kept him away from running for more than a week.

Maybe with under 2 minutes you take a few knees, before that, keep playing.