Possible Complications
Problems are rare, but all procedures have some risk. The doctor will go over some problems that could happen, such as:
- Excess bleeding
- Problems from anesthesia, such as wheezing or sore throat
- Infection
- Blood clots
- A buildup of blood in the wound
- Poor fusion of the bones
- Nerve damage causing pain, numbness, tingling, or
paralysis
- Problems with bowel or bladder function
- Injury to other structures, such as the nerves and blood vessels
Things that may raise the risk of problems are:
- Smoking
- Drinking excess alcohol
- Chronic diseases, such as diabetes or obesity
Reasons for Procedure
Spinal nerves leave the spine between the vertebrae. Damage to the vertebra and the disc that sits between them can put extra pressure on these nerves. This can cause pain and weakness in the areas of the body affected by the nerve. Spinal fusion may be done when other methods have not helped. A spinal fusion removes damaged tissue and locks the two vertebrae in place to prevent irritation of the spinal nerve between the vertebrae.
This surgery is done to ease pain and improve function in people
who have problems, such as:
- Spinal stenosis—narrowing of the spinal
canal
- Spinal injury, such as vertebral fractures
- Spondylolisthesis—vertebra is out of line
with the others
- Scoliosis—abnormal curve in the spine
- Weak or unstable spine, usually due to infection or tumors
- A herniated disc
What to Expect
Prior to Procedure
The surgical team may meet with you to talk about:
- Anesthesia options
- Any allergies you may have
- Current medicines, herbs, and supplements that you take and whether you need to
stop taking them before surgery
- Fasting before surgery, such as avoiding food or drink after midnight the night
before
- Arranging for a ride to and from surgery
- Tests that will need to be done before surgery, such as images of the spine
Anesthesia
The doctor will give:
- General anesthesia—you will be
asleep
- Spinal anesthesia—an
area of the body will be numbed
Description of Procedure
Spinal fusion can be done by open surgery or using a minimally invasive technique. The exact steps will depend on the type of spinal fusion that is being done. Some examples are:
Interbody fusion
uses the surfaces in between the vertebrae for fusion. The disc in between the vertebrae is either partly or fully removed. A cage (spacer) will be placed between the vertebra where the disc was removed. The cage may be made of plastic or metal. Bone grafts are used to help the bones heal together into one solid bone. It may be from a person's own bone, one from a cadaver, or artificial bone. Metal screws and plates may then be placed on the outside of the vertebra to keep the bones stable. There are three types of interbody fusion:
- Posterior lumbar interbody fusion (PLIF)—The cut is made in the back. Muscles and
nerves are moved out of the way. Part of the spinal bone may be removed to access
the area between the vertebrae. The cage is placed from the back of the
spine.
- Transforaminal lumbar interbody fusion (TLIF)—The cut is made from the side. This
allows access to the vertebra without a lot of movement to the muscles and nerves.
It also does not require removing any bones. The cage is placed from the side of
the spine.
- Anterior lumbar interbody fusion (ALIF)—The cut is made in the lower belly.
Organs and blood vessels are moved aside to access the vertebra. The muscles and
nerves of the spine do not have to be moved. The cage is placed through the front
part of the spine. No surgery is done on the outside of the vertebra.
Another option is posterolateral fusion. A cut is made
in the back. The muscles are pushed aside to access the vertebra. Damaged bone and
structures may be removed to ease pressure on spinal nerves. A graft will be placed
along the outside of the vertebra to support bone healing and growth. Screws and rods
may also be used to keep the bones stable while they heal.
Cuts will be closed with stitches or staples. A bandage will
be placed over them.
How Long Will It Take?
4 to 6 hours or longer
How Much Will It Hurt?
Anesthesia will prevent pain during surgery. Pain and swelling
are common in the first month. Medicine and home care can help.
Average Hospital Stay
The average length of stay is 3 to 4 days. If you have any
problems, you may need to stay longer.
Post-procedure Care
At the Hospital
Right after the procedure, the staff may:
- Give you pain medicine
- Apply a back brace or cast
- Teach you how to move, sit, stand, and walk
Physical therapy will be started soon after the procedure.
During your stay, staff will take steps to lower your chance of infection, such as:
- Washing their hands
- Wearing gloves or masks
- Keeping your wounds covered
You can also lower your chance of infection by:
- Washing your hands often and reminding visitors and staff to do the same
- Reminding staff to wear gloves or masks
- Not letting others touch your wounds
At Home
It will take a few weeks for the wounds to heal. It will take several months for
the bones to fully fuse. Physical activity will be limited during this time. You
will need to ask for help with daily activities and delay your return to work.
Problems to Look Out For
Call the doctor if you are not getting better or you have:
- Signs of infection, such as fever and chills
- Redness, swelling, excess bleeding, or discharge from the wounds
- Pain that you cannot control with medicine
- Cough, shortness of breath, or chest pain
- Numbness, tingling, pain, or weakness, especially in the arms, hands, legs, or feet
- Swelling in the feet or legs
- Loss of bladder or bowel control
- Problems passing urine
- Joint pain, fatigue, stiffness, rash, or other new symptoms
If you think you have an emergency, call for medical help right away.