This procedure relieves pressure on the nerve roots in the spine. It is most commonly performed to relieve the pain of stenosis. This is a narrowing of the spinal canal that is often caused by the formation of bony growths that can press against the nerve roots. The surgeon may treat one or more vertebrae.
Removing the Spinous Process
First, the surgeon creates a small incision to access
the spine. The spinous processes are the bony
protrusions that stick out from the rear of the spine.
The surgeon carefully removes the spinous process
from the vertebra or vertebrae that need treatment.
Removing the Lamina
Next, the surgeon removes the lamina. This is the
part of each vertebra that forms the rear portion of
the spinal canal. Removing the lamina opens up the
spinal canal, creating more space for the nerves.
The surgeon may need to remove the lamina from
more than one vertebra to fully relieve the pressure.
Clearing Bony Growths
The surgeon may also need to treat the foramina.
These are the openings on each side of the
vertebrae where the nerve roots exit the spine. The
surgeon inspects these openings and clears away
any bony growths that could press against the
End of Procedure
When the procedure is complete, the incision is
closed with sutures or surgical staples. The patient
is monitored in a recovery room. Physical therapy
may be recommended as the spine heals.