Traumatic Injuries (Responder) Scenario

You are working as part of medical cover for an equestrian cross-country event as a first aider. The day so far has been uneventful, and the jumping section you are stood by has garnered no issue from the competitors and their horses so far. A new rider and horse enter the section, the first two jumps are covered with ease. As the rider approaches the third jump, the horse misplaces its’ footing. The horse impacts the solid jump feature and somersaults over. The rider hits the floor with a crash and the horse rolls over her. The horse stands up and canters off, the rider lays motionless on the floor.