Lumbar Decompression and Fusion – Posterior

Why is this surgery done?

Posterior lumbar decompression and fusion surgery is performed to take pressure off of the nerves in the lower back and to treat or prevent instability of the lower spine. This surgery is typically done for patients with spinal stenosis and abnormal alignment, such as spondylolisthesis (when one of the bones of the spine is slipped forward on top of the one below). Patients who are good candidates for surgery usually have back and leg symptoms: pain, weakness, changes in sensation and trouble standing up straight or walking distances.

How is posterior lumbar decompression and fusion surgery done?

The surgery is performed through an incision in the middle of the lower back. Your surgeon will remove a window of bone in a procedure called a laminectomy, as well as ligament and parts of the joints of the spine to take the pressure off of the nerves. The fusion portion of the procedure involves using screws and rods to connect bones of the spine together, along with placing bone graft material from your own bone, a cadaver or artificial bone material. These bone materials will grow over time, typically 6 – 12 months, and fuse the bones of the spine together.

What are my risks? What are common complications?

The risk of complications is directly related to the length of surgery, the complexity of the procedure and the lengthy recovery period. Patients with other medical issues are at an increased risk for complications. 

This is not a comprehensive list, but some possible complications include:

  • Infection, sometimes leading to additional surgery, increased pain or injury
  • Blood loss, sometimes requiring blood products
  • Damage to the spinal cord or spinal nerves, which can be temporary or permanent, and can result in pain, numbness, weakness or paralysis
  • Damage to the covering of the spinal cord or a spinal nerve, which can cause a spinal fluid leak and may require a drainage procedure or another operation
  • Failure of your bone to fuse, which can lead to additional surgery, increased pain or injury
  • Acceleration of the normal aging changes in the bones adjacent or next to the fusion
  • Problems with the bone screws or rods, which can lead to additional surgery, increased pain or injury
  • Blood clots
  • Death

What do I need to know before surgery?

Before your surgery, preoperative testing will need to be completed. To ensure medical clearance for surgery, testing such as blood work and EKG are completed. Usually, the surgical facility will contact you and will schedule an appointment for a detailed evaluation and examination. Additional clearance may be needed from a cardiologist, pulmonologist or another specialized physician.

This important checklist will help ensure you are prepared and ready for your surgery. Please read it and ask your surgeon to answer any questions you have.

  • If you take any blood thinners—for example, Coumadin (warfarin), aspirin, Plavix, Xeralto, Eliquis, Brilinta or Ticlid—make sure your surgeon is aware of this medication as soon as possible. You will be given specific instructions regarding any need to discontinue or modify your current use of any blood-thinning medication. If necessary, your surgeon will get clearance from your cardiologist or other physician to ensure this medication change is safe and appropriate for you based on your heart history including prior heart attack, stent placement or open-heart surgery.
  • Stop taking aspirin-based products one week before surgery. Also, stop taking nonsteroidal anti- inflammatory drugs, such as ibuprofen, Naprosyn, Naproxen, Advil and Motrin, at least one week before surgery.
  • Please do not eat or drink anything after midnight the day of your surgery. This includes water, coffee, chewing gum and hard candies. You may brush your teeth with toothpaste the morning of surgery.
  • Some daily medications may be taken the day of surgery with a sip of water. Medications that are appropriate to take the morning of surgery will be discussed with you by the hospital staff or your surgeon’s nurse.

General discharge instructions

Whether you leave the hospital for another facility or are discharged home, it is important to follow these instructions.

  • Your incision can be open to air when you leave the hospital. It is important that you have someone look at your incision each day and let you know if there are any changes. 
  • It is important to keep the incision clean and dry. You may shower when you are home, but we do not recommend tub bathing, hot tubs or swimming until seen back by your surgical team.
  • Sutures or staples are usually removed two weeks after surgery, but this can vary. Your surgical team will help coordinate removal of staples or sutures.
  • General anesthesia, inactivity after surgery and pain-relieving prescription narcotics may cause constipation after surgery. It may be helpful to take a stool softener and/or laxative after surgery. These medications, which include Colace, Miralax and Senokot, may be purchased over the counter at your local pharmacy.
  • Do not drive for at least the first four weeks after surgery. We recommend you drive only when you are no longer taking pain medications and when you can comfortably turn your body far enough to drive safely using the car’s mirrors.
  • Do not lift anything heavier than 10 pounds until you see your surgeon at the follow-up appointment after your surgery.
  • Do not do things that require repetitive bending, twisting or lifting. Such activities include laundry, sweeping, vacuuming, shoveling and yard work. When you are moving, remember to use good body mechanics, which include using your legs instead of your back while lifting.
  • Do not smoke. It is not healthy for your back or your body’s healing abilities.
  • Please avoid nonsteroidal anti-inflammatory drugs, such as Celebrex, Motrin, ibuprofen, Advil and Aleve. These medications may hinder the bone growth needed for the fusion occurring after your surgery.

Call your surgeon if you experience any of these symptoms:

  • Signs or symptoms of infection, including redness, wound drainage, worsening pain or a fever of more than 101°F
  • New or worsening leg weakness, pain, numbness or tingling as compared to before surgery
  • Difficulty with bowel or bladder function
  • Calf or leg swelling, tenderness or redness

What should I expect while recovering?

The recovery process is lengthy, sometimes as long as 9 – 12 months. It is important that you follow the recommendations and restrictions of your surgical team to ensure a good outcome.

Managing your surgical pain can be difficult. Pain from surgery will change in intensity as you heal. This is normal and expected. Your back pain should slowly improve as the healing process occurs and your fusion becomes more solid. This healing may take several months. During this time your surgeon will work with your primary care physician or other pain management specialist on pain management techniques and regimens.

Possible physical therapy exercises

After leaving the hospital, physical therapy is recommended for some patients, even those who do not need a rehabilitation stay. Your surgeon may recommend physical therapy at one of your early postoperative appointments, depending on your progress. The most important part of your recovery is walking, which increases blood flow to the spine and assists in the healing process. Try walking on a structured basis beginning slowly at first and progressing on a regular basis.


Request an appointment online and we will guide you through the next steps.