Treatment options for pain after back surgery
It must be kept in mind that postoperative imaging
studies will almost always show scar tissue involving
the nerve root and surrounding structures, a
phenomenon known as the post-laminectomy membrane.
Much clinical and animal research has been done
on the nature and significance of this scar tissue,
but it has not been conclusively shown that scar
tissue is a major cause of back pain or leg pain
after spine surgery.
Techniques used during back surgery
Fat grafts taken from the wound, gelatin sponges, silicon-based sheets (Silastic)
and other techniques have been used in an effort to block the mobilization
of cells into the region of the nerve root, thereby inhibiting development
of epidural fibrosis. Although animal studies have shown that these ‘interpositional
membranes’ do indeed limit the formation of scar tissue, the technique
has not been conclusively shown to improve clinical outcomes.
Adcon-L (produced by Gliatech), was approved
by the Food and Drug Administration for use in
the lumbar spine to reduce scar tissue and showed
some early promise. However, the manufacturer
has discontinued production of Adcon-L and it
is no longer available.
Stretching exercise after back surgery
Stretching the nerve root while the body is healing (scarring in) after back
surgery can help limit epidural fibrosis from becoming a clinical problem.
Most scar tissue forms within the first 6 to 12 weeks after back surgery.
The theory is that if the nerve is kept mobile while the wound heals, the
nerve will not be bound down by adhesions and the scar tissue that develops
should not become a problem. Routinely pumping the ankle while stretching
the hamstrings will move the nerve across the operative disc site.
When back pain is due to scar tissue
If
a complete workup indicates that the patient’s
back pain or leg pain is due to a nerve root
bound by scar tissue, the treatment options are
fairly limited.
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In the early postoperative period (3 to 12
months), medications such as Neurontin may
help limit back pain or leg pain, and exercises
can help free up the nerve.
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Beyond this time period, pain management
techniques may help the patient cope with the
back pain or leg pain.
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