The small man's leg buckled under the impact and the Turk went down.

A rifle boomed from among the trees and the man's right leg buckled under him.

Morok looked up, concentrated, then his long legs buckled and he caught himself just before he fell.

"Wait," she said, trying to stand up, but her legs buckled under her.

The Lift slammed to a halt and their legs buckled like fabric.

He took a step backward before his legs buckled under him.

The bedframe skewed as one leg slowly buckled under it.

Britain's king half turned to meet his new assailant and his legs buckled under him.

She staggered forward as her legs buckled under her.

She only managed one before her legs buckled and she sank to the floor.