Scalping, a type of interference where a forelimb strikes the dorsal pastern area of the hindlimb. An injury typical of racing trotters
Paddling, a type of gait abnormality where the hoof arcs in during the flight phase and can lead to brushing injuries on the contralateral limb
A non-specific type of gait abnormality where any limb strikes any part of another limb. In the USA, interference is used synonymously to brushing.