He managed to free himself, but he slipped and nearly crumpled to his knees.

Then he crumpled to his knees, pain clawing through him.

But on the other end of the floor, Kenyon Martin crumpled to his knees.

He crumpled to his knees without a cry, then slid forward on the floor.

I stood up and almost crumpled to my knees, my legs felt so weak.

After a moment, he jerked the pall back into place over the hands and crumpled to his knees.

The man clutched what was left of his guts and then crumpled to his knees.

Bolan let her go and she crumpled to her knees.

Then the guard crumpled to his knees and fell on his side out of sight.

His legs deserted him and he crumpled to his knees.