When treating a person with a spinal cord injury, repairing the damage
created by injury is the ultimate goal. By using a variety of treatments,
greater improvements are achieved, and, therefore, treatment should not be
limited to one method. Furthermore, increasing activity will increase his/her
chances of recovery.
Making Connections
In order to restore movement and sensation, axons must grow from surrounding
healthy tissue into the site of injury and then continue on to the brain. Even
when researchers are able to stimulate the growth of injured axons, they often
find they cannot get the axons to grow beyond the site of injury itself.
To promote this growth, Mark Tuszynski, a neuroscientist at the University of
California, San Diego, added nerve cells and growth factors to the injury site
and beyond. By leaving behind a trail of bread crumbs to guide axons at points
along the spinal cord, for the first time researchers witnessed "axons
regenerating into and beyond an injury site," Tuszynski explains.
Improving locomotor function
Improvement of locomotor function is one of the primary goals for people with
a spinal cord injury. SCI treatments may focus on specific goals such as to
restore walking or locomotion to an optimal level for the individual. The most
effective way to restore locomotion is by complete repair, but techniques are
not yet developed for regeneration. Treadmill training, over groundtraining, and
functional electrical stimulation can all be used to improve walking or
locomotor activity. These activities work if neurons of the central pattern
generator (CPG) circuits, which generate rhythmic movements of the body, are
still functioning. With inactivity, the neurons of CPG degenerate. Therefore,
the above activities are important for keeping neurons active until regeneration
activities are developed. A 2012 systematic review found insufficient evidence
to conclude which locomotor training strategy improves walking function most for
people with spinal cord injury. This suggests that it is not the type of
training used, but the goals and the routines that have the biggest impact.
While there is a wide range of experimental approaches to treating spinal
cord injury, they all share a common goal: improving the lives of people with
spinal cord injuries.
"What we know about spinal cord injury has dramatically increased in the last
40 years," says Guest. "The rate of acceleration of improvements in treating
spinal cord injuries will continue in the next decades, and the outlook for such
patients will only get better."
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