Paraplegia occurs when the legs are affected by the spinal cord damage ( in thoracic , lumbar , or sacral injuries ) .
Tetraplegia occurs when all four limbs are affected ( cervical damage ) .
Paraplegia occurs when the legs are affected by the spinal cord damage ( in thoracic , lumbar , or sacral injuries ) , and tetraplegia occurs when all four limbs are affected ( cervical damage ) .