Quadriplegia, also known as tetraplegia, is paralysis caused by illness or injury to a human that results in the partial or total loss of use of all of their limbs and torso; paraplegia is similar but doesn't affect the arms. The loss is usually sensory and motor, which means both sensation and control are lost. Causes It is caused by damage to the brain or the spinal cord at a high level C1 - C8 - in particular, spinal cord injuries secondary to an injury to the cervical spine. The injury, kno… (More on Quadriplegia)