Impact occurrence descriptors
| Descriptor | Definition |
| Fall impact sequence: this descriptor will identify the order in which the body parts sustain impact upon 'landing'. Code in order of occurrence and record impact intensity for each body part involved | Head/neck |
| Upper extremity (shoulder and arms) | |
| Torso—back | |
| Torso—side | |
| Torso—front | |
| Lower extremity | |
| Site of impact: body part sustaining impact | Head/neck: above shoulder |
| Shoulder: armpit to apex of shoulder level | |
| Arm: below armpit level | |
| Upper extremity: shoulder and arm | |
| Torso: above hip level to the level of the armpit | |
| Lower extremity: below hip | |
| Impact intensity: subjective assessment of the impact sustained by the jockey | Low |
| Medium | |
| High | |
| Impact surface | Ground |
| Obstacle—fence/railing | |
| Stalls | |
| Horse/rider | |
| Impact surface: subjective assessment of impact surface quality | Soft: turf/sand/synthetic track/fleshy regions of the human or horse’s body |
| Rigid: horse’s hoof/leg/bony prominence of horse or human/railing or equipment/concrete/obstacle (lower aspect, for example, toe board) | |
| Movement speed of impact surface: the speed at which the impact surface was travelling during the point of contact | Stationary |
| Slow | |
| Moderate | |
| Fast | |
| Movement direction of contact surface: the direction the impact surface was travelling at the point of contact with the jockey | Towards jockey |
| Away from jockey | |
| Not applicable (stationary) | |
| Not visible |