I tried to get up, but my legs wouldn't respond.

He attempted to go to the bathroom, but found that his left leg wouldn't respond.

She turned to help him to his feet, but his legs would not respond.

I try to stand, holding it on its cord, but my legs will not respond; they have no feeling.

She thought to move but nothing happened; her legs did not respond.

He tried to move it, but the leg no longer responded.

He tried to force a burst of speed, but his legs would not respond.

He tried to hurry, but his legs would not respond.

His leg responded with a matching pressure, before he had a chance to think things over.

He wanted to go below and help, but his legs wouldn't respond.