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It is caused by damage to the brain or to the spinal cord at a high level - in particular spinal cord injuries secondary to an injury to the cervical spine. The injury causes victims to lose partial or total mobility of all four limbs, meaning the arms and the legs. Severity depends on which cervical vertebra is injured and the extent of the injury. An individual with an injury to C1 (the highest cervical vertebra) will likely be paralyzed and lose function from the neck down and be ventilator dependent. An individual with a C7 injury will likely be paralyzed and lose function from the chest down but still retain use of the arms and much of their hands. The extent of the injury is also important. A complete severing of the spine will result in complete loss of function from that vertebra down. A partial severing of the spinal cord results in varying degrees of mixed function and paralysis. For example, there are quadriplegics who have impairment in all four limbs but can still walk and use their hands due to the relatively minor extent of their injury.
The condition is also termed tetraplegia. Both terms mean "paralysis of four limbs"; however, tetraplegia is becoming the more commonly accepted term for this condition.[How to reference and link to summary or text]
"Tetra", like "plegia", has a Greek root, whereas "quadra" has a Latin root.
There are about 5000 cervical spinal cord injuries per year in the United States and about 1000 per year in the UK. In 1988, it was estimated that lifetime care of a 27-year-old rendered tetraplegic was about US $1 million and that the total national costs were US $5.6 billion per year.
Delayed diagnosis of cervical spine injury has grave consequences for the victim. About one in twenty cervical fractures are missed, and about two-thirds of these patients have further spinal cord damage as a result. About 30% of cases of delayed diagnosis of cervical spine injury develop permanent neurological deficits. In high cervical injuries total paralysis from the neck down is the result. Patients will need constant care and assistance in things such as getting dressed, eating, and bowel and bladder help. High quadriplegics will usually use catheters or wear diapers because they are unable to use their arms. Low quadriplegics (C6-C7) can usually live independently.
- ↑ Parks, Jennifer (Thursday June 28 2007), "Enjoying the ride", Ottawa 24 hours 1 (155): 11, http://24hrs.ca
- Back-Up Trust
- Spinal Cord Injury Peer Support
- CareCure Community
- European Multicenter Study about Spinal Cord Injury
- United Spinal Association 
- Central nervous system disorders
- Clearing the cervical spine
- Musculoskeletal disorders
- Spinal cord injuries
Cerebral palsy and other paralytic syndromes (G80-G83, 342-344)
|Paresis and plegia NOS|
|Flaccid vs. spastic|
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