<unk>  is caused by damage to the brain or the spinal cord at a high level. The injury, which is known as a lesion, causes victims to lose partial or total function of all four limbs, meaning the arms and the legs. Typical causes of this damage are trauma (such as a traffic collision, diving into shallow water, a fall, a sports injury), disease (such as transverse myelitis, Guillain–Barré syndrome, multiple sclerosis, or polio), or congenital disorders (such as muscular dystrophy).<unk>  is defined in many ways; C1–C4 usually affects arm movement more so than a C5–C7 injury; however, all<unk> s have or have had some kind of finger dysfunction. So, it is not uncommon to have a<unk>  with fully functional arms but no nervous control of their fingers and thumbs. It is possible to suffer a broken neck without becoming<unk>  if the vertebrae are fractured or dislocated but the spinal cord is not damaged. Conversely, it is possible to injure the spinal cord without breaking the spine, for example when a ruptured disc or bone spur on the vertebra protrudes into the spinal column.
Tetraplegia
Triplegia
Hemiparesis
Myopathic gait
Triparesis
Synesthesia
Locomotor ataxia
Sensory ataxia