How Much Bone Is Removed During A Lumbar Laminectomy?

During a lumbar laminectomy, surgeons often remove about 15.5% of the lamina on the side of the surgery and 8.8% on the opposite side. However, the exact amount of bone removal depends on your spinal anatomy, the number of spinal vertebrae involved, and the severity of your disc herniation.

At Total Orthopedics & Sports Medicine, our spinal surgeons carefully assess your lumbar spine to determine the exact bone removal needed. To minimize bone damage, we use minimally invasive procedures or surgical microscopes to precisely remove the lamina and bone spurs while protecting spinal nerves and soft tissues. Call us today at 855-321-6784 to schedule your appointment.

Which Portion of the Vertebra Is Treated in a Standard Lumbar Laminectomy?

According to MedlinePlus, during a laminectomy, surgeons remove the lamina (bony arch that forms the roof of the spinal canal). Bone spurs or herniated disc material may also be removed. This procedure helps relieve pressure on the spinal nerves or the spinal cord, reducing back and leg pain, as well as other symptoms associated with lumbar spinal stenosis.

Moreover, depending on the severity of your condition, the doctor may also remove other structures, such as:

Facet Joint Portions: Surgeons make an incision to trim minor portions of the facet joints to create more space in the spinal canal.
Thickened Ligaments: Healthcare professionals may remove thick ligaments (due to degenerative changes) to relieve pain.
Spinous Process Tips: Sometimes the tips of spinous processes are removed for better access to the lamina.
Degenerative Bone Overgrowth: Doctors remove additional bony growth along the vertebrae to prevent future spine problems.

Who is an Ideal Candidate for Lumbar Laminectomy?

If you have persistent back, leg pain, or numbness caused by lumbar stenosis, the doctors may recommend a lumbar laminectomy to relieve discomfort. This surgical procedure is also suitable for patients with compressed nerves, bone spurs, or herniated discs that do not improve with conservative treatments.

Additionally, doctors may recommend a lumbar laminectomy if you experience any of the following symptoms:

Trouble maintaining balance or stability
Bladder or bowel control issues
Leg muscle cramping or spasms
Pain worsens when walking or standing
Reduced reflexes in the lower limbs

According to StatPearls, a laminectomy is also effective for tumors, epidural abscess, and spondylotic myelopathy. The procedure has a success rate of 90%, with patient satisfaction above 75%, and reoperation rates around 18% within five years.

How Do Doctors Perform Lumbar Laminectomy?

For a lumbar laminectomy, general anesthesia is administered to ensure you don’t feel any discomfort during the surgery. Then, the surgeon makes a small incision in your lower back over the affected vertebrae and carefully moves your muscles and soft tissues aside. This approach allows direct access to your lamina in the spinal column.

After that, the surgeon removes the lamina and any bone spurs or thickened ligaments that are pressing on your nerves. Moreover, to protect your spinal structure, surgeons often use specialized tools, such as:

High-speed drills: Remove bone efficiently while minimizing damage to surrounding soft tissues.
Laminectomy rongeurs: Larger, precise instruments used to remove significant portions of the lamina or bone spurs.
Kerrison rongeurs: Extract small fragments of bone and ligament from narrow spaces around nerves during the spine surgery.
Bone curettes: Scrape away remaining bone or ligament tissue without damaging nearby nerves.
Suction devices: Keep the surgical area clear of blood and debris for better visibility, commonly used in spinal fusion surgery.

Then, the surgeon repositions your muscles and tissues over the spine and closes the incision with sutures or staples. After the procedure, you’re taken to a recovery area where nurses monitor your condition.

Does Minimally Invasive Laminectomy Require Less Bone Removal Than the Open Lumbar Laminectomy?

Yes, a minimally invasive laminectomy (MIL) generally requires less bone removal than an open lumbar laminectomy (OLL). In a minimally invasive approach, surgeons remove only the portions of the lamina, facet joints, or bone spurs necessary to relieve pressure on spinal nerves. On the other hand, an open lumbar laminectomy involves a larger incision and removal of extra vertebral bone and surrounding soft tissue to access the spinal canal.

How Does Lumbar Laminectomy Differ From Laminotomy Or Discectomy?

Unlike laminotomy or discectomy, lumbar laminectomy removes a larger portion of the lamina to relieve pressure on multiple spinal nerves. In contrast, a laminotomy removes only a small “window” of the lamina to relieve localized nerve compression. This targeted approach preserves most of the vertebral bone, which helps maintain the structural stability of your spine.

On the other hand, a discectomy removes herniated disc material that presses on the spinal cord or nerves. Moreover, the surgeon performs this procedure with minimal bone removal, usually at a single vertebral level. In some cases, the surgeon also combines discectomy with laminotomy to decompress the nerve more effectively while preserving spinal stability.

Tip: Begin gentle walking within 24–48 hours after surgery to improve circulation, reduce pain, and lower the risk of blood clots.

How Do Surgeons Minimize the Risk of Postoperative Spinal Instability?

To minimize the risk of postoperative spinal instability, our spine specialist, Dr. Vadim Lerman, assesses your spine through MRI and CT scan to identify which vertebrae require decompression. During surgery, he preserves essential structures such as the facet joints, nerve roots, and supporting ligaments while removing only the compressed nerves and damaged bones.

When necessary, Dr. Vadim Lerman also uses minimally invasive surgery techniques with tubular retractors and microscopes to limit muscle disruption. After surgery, he guides you through a structured rehabilitation program, including targeted exercises to strengthen your back muscles, which helps maintain spinal stability. He also closely monitors your recovery to minimize the risk of any possible complications. Call us at 855-321-6784 to schedule your appointment.

What Are the Risks of Removing Excess Lamina During Laminectomy?

Removing too much lamina during a laminectomy can increase the risk of postoperative spinal instability. The lamina, along with the facet joints and supporting ligaments, helps maintain the strength and alignment of your spine. Therefore, excessive removal can lead to weakened vertebrae, abnormal spinal movement, and an increased risk of developing spondylolisthesis (slippage of one vertebra over another).

Besides spinal instability, removing too much lamina can also cause the following symptoms and complications:

Persistent or worsening back pain
Nerve irritation or injury
Scar tissue formation (epidural fibrosis)
Reduced spinal flexibility
Increased risk of reoperation

We Help You Restore Spine Stability With Lumbar Laminectomy Surgical Procedure — Visit Total Orthopedics & Sports Medicine!

If you’re experiencing chronic back pain, leg weakness, or spinal instability, delaying surgery can lead to serious complications. Conditions like lumbar spinal stenosis or compressed nerves may worsen, causing nerve damage and reduced mobility. Moreover, symptoms such as persistent pain and numbness can interfere with your daily activities.

With 21 years of experience, our team at Total Orthopedics & Sports Medicine offers advanced laminectomy procedures and lumbar decompression surgery to treat spinal stenosis and provide pain relief. Moreover, we guide you through a structured rehabilitation program to support faster recovery and improve long-term surgical outcomes. Call us at 855-321-6784 or visit 2339 Hempstead Turnpike, East Meadow, NY 11554, to discuss your treatment options.

FAQs

Does Bone Regrow After a Laminectomy?

Yes, bone can regrow after a laminectomy, but only in small portions. After surgeons remove part of the lamina to relieve pressure on spinal nerves, your body naturally forms new bone. This regrowth is often mild and harmless. However, in some patients, excess bone may form, which may cause recurring pain and stiffness.

What Are the Signs of Post-Laminectomy Instability?

After a laminectomy, if you notice persistent or worsening back pain, a feeling of “giving way,” or stiffness in your cervical spine, these are the signs of post-laminectomy instability. You might also experience tingling, radiating pain in your legs, and muscle spasms around the surgical site. In such cases, contact us immediately to prevent these long-term effects of the lumbar laminectomy.

Is a Laminectomy a Major Surgery?

Yes, a laminectomy is considered a major surgery because it involves removing part of the vertebra. Moreover, the procedure requires precise surgical techniques around the spinal cord and nerve roots, which increases its overall complexity. It also involves general anesthesia and a structured recovery period based on your health and the extent of the decompression.

How Bad Is the Pain After a Laminectomy?

Pain after a laminectomy is usually severe, especially during the first few weeks. You may experience muscle pain, nerve pain, and discomfort at the incision site. Many patients also report nerve irritation or constant stiffness near the affected vertebrae. However, pain levels gradually decrease with proper pain management, rest, and guidance from our healthcare team.

How Long Is Laminectomy Surgery?

Laminectomy surgery typically lasts between one and three hours, depending on the number of vertebrae involved and the complexity of the procedure. For instance, a single-level laminectomy may take about one hour, while a multi-level procedure or surgery involving additional decompression can take up to three hours.

What Are the Permanent Restrictions After a Laminectomy?

After a laminectomy, you should avoid lifting heavy objects, especially during the first weeks of recovery. Other than that, it’s important to limit high-impact activities, repetitive bending, and exercise that stresses the spine. You should also avoid sudden twisting motions, prolonged sitting without breaks, and any activity that increases the risk of injury.

How Does Bone Removal Affect Rehabilitation After Laminectomy?

The extent of bone removal during a laminectomy impacts the required recovery time and the intensity of the rehabilitation process. For example, more extensive removal may reduce spinal stability, requiring a slower, more careful rehabilitation plan. In contrast, minimal bone removal typically allows for a faster recovery with less intensive care to protect the spine.