A Quadriplegic is one who is disabled in all four limbs, as a result of injury or illness (usually motor car accidents, violence, diving accidents, rugby injuries, etc).

The degree of paralysis is determined by where the spinal chord is severed. For example, damage to the C4 cervical vertebra (closest to the neck) results in total paralysis from the neck down. Damage to the C6 vertebra results in paralysis from the neck down, but with partial movement of the arms, but no hand or finger co-ordination or control. Damage lower down the spinal column results in Paraplegia. A Quadriplegic is of sound mind, trapped in a non-functioning body.

A Quadriplegic needs to be washed, fed, dressed, and toileted. They require assistance from trained carers to see to these basic needs.