Chronic low back pain causes countless days of work lost and
health insurance dollars spent, yet the causes of this long-term
condition remain elusive. Why do some people recover quickly
from back pain while others suffer for years? A recent study
in the journal Spine adds to the growing body of information
that helps us understand the causes of recurring back pain
and injury.
Low back pain is known to cause sufferers to utilize their
back muscles differently, or substitute the wrong muscles
for lifting tasks. Added force could in turn hasten spinal
disc degeneration. This study investigated the force during
lifting on the spines of 22 back-pain patients and 22 healthy
individuals in two phases: one measuring spinal forces while
participants lifted in a specific posture, and the other allowing
individuals to personalize their posture to lift comfortably.
The researchers wanted to determine how back-pain patients
might compensate for their pain.
The researchers found that patients tended to compensate
for back pain and injury by substituting inappropriate back,
side, and abdominal muscles for lifting, rather than the correct
muscles that hurt. The resulting force on the spine was significantly
increased in back-pain patients as uninjured muscles were
used to compensate for injured muscles. By guarding the injured
muscles, back-pain sufferers imposed twice as much twisting
force and 1.5 times more compressive force on their spines
as healthy people, when lifting the same object in a controlled
fashion. Also, lifting more slowly, as those with back pain
tended to do, only prolonged and intensified the force on
the spine.
If you suffer from chronic low back pain, talk to your doctor
of chiropractic about treatment options like exercise and
stretching to help you avoid substituting the wrong muscles
while lifting.
For more information on back pain, head to https://www.chiroweb.com/tyh/backpain.html.
Reference:
Marras WS, Davis KG, Ferguson SA, et al. Spine
loading characteristics of patients with low back pain compared
with asymptomatic individuals. Spine 2001:26(23), pp.
2566-2574.
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