He knocks Chris' arm, causing him to lose control of the car and crash.

She angled the long shaft away, swung around again and knocked his arm down.

Alan knocked Pig's arm down, as he raised it to throw.

She literally flew the few feet to knock his arm just as the pistol discharged.

Then one of the men turned Rick moved without thought, diving into the man, knocking his outstretched arm up.

Thomas knocked George's arm away with a vicious snap of his wrist.

He made a quick stab at my left side, but I just managed to knock his arm away before our collision.

A young woman ran past him, knocking his arm.

He grunted with the violence of the blow which knocked his arm aside.

Certainly, actions in the home are a major issue, but incidents can happen as simple as knocking your arm against a chair.