A 12-year-old Nottinghamshire boy broke his arm after riding his scooter into a nylon rope.
His father John Ambrose said his son Sam could have been killed by the rope that had been strung across a road in Warsop on 27 May.
"I saw it at the last second before I hit the rope then I somersaulted on to the floor, " Sam said.
He also suffered rope burn on this neck, a broken nose and a chipped tooth.
His father said his son could have had a broken neck and he wanted the offenders to be prosecuted.
Nottinghamshire police are treating the incident as assault causing bodily harm.