
Originally Posted by
Wise Young
I assume that you are referring to complete thoracic spinal cord injury. There is a general impression (although it has not been confirmed with detailed studies) that patients with complete thoracic spinal cord injuries are less likely to recovery. The reason may be because high-speed accelerations with substantial forces are necessary to break the thoracic spine because it is so well protected and reinforced by the ribs. Likewise, the lumbar spine has heavy-duty bony protection. Therefore, when injuries occur in those regions and the injury is "complete", it is a result of a severe injury.
Motor recovery from mid-thoracic injuries may also be less likely because the lumbar cord is further away from the injury site. Finally, injuries to the lumbosacral spinal cord involves gray matter (neuronal) injuries whereas injuries to the thoracic spinal cord involve mostly white matter (axonal) injuries.
wise.