Paraplegia is when people cannot feel or move their legs and feet due to a spinal cord injury. Paraplegia occurs after a spinal cord injury to the lower back, which prevents the brain from communicating with the parts of the body below the injury.
Quadriplegia, also known as tetraplegia, is when people cannot feel or move their arms and legs due to a spinal cord injury. Quadriplegia/tetraplegia occurs after a spinal cord injury to the neck or upper back, where the damage prevents the brain from communicating with the rest of the body.