Her knees caught the back of the sofa and she dropped abruptly.

Pug felt his knees go slack but caught himself before he fell.

My knee lifted and caught the side of his head as he came in, and the nudge was enough to put him over the edge.

My knee caught a metal edge as I moved.

He doubled over; the same knee came up again and caught him in the chin.

His raised knee caught Kirk in the stomach, knocking the wind out of him.

Her knee came up and caught him dead in the groin.

I warned as Otley's knee caught the back of my ear.

His right knee shot up and caught her in her ribs.

Karen's knee caught her in the stomach as Karen lunged forward.