Defending champion Jamie Anderson of the United States won gold but all of the riders fell on at least one run.
Bronze medallist Enni Rukajarvi said: "It was pretty bad. I'm happy to land my run and get a good score but I'm most happy that no one got hurt bad."
Britain's Aimee Fuller came 17th and had a heavy crash on her second run.
The event sees riders perform tricks on a series of man-made jumps, rails