This word is just not coming to mind. The closest I can think of are "arms and legs asunder" but that conjures up some pretty graphic and unintended imagery. Same with spread-eagle which is the first term that came to mind.
My question is, is there some word to describe a person laying on the ground with there arms and legs spread that doesn't carry the same sexual connotations as spread-eagle. Example:
She lay ____ on her back after she had fallen from the jungle gym, the air knocked from her lungs.
The part where other words I can think of (such as haphazardly) don't fit, is that spread-eagle seems to imply lying down which is something I would like the alternative to do as well though without the sexual connotations.