What is decompression and laminectomy?
Decompression surgery relieves pressure on the spinal cord or nerve roots caused by narrowing of the spinal canal - often from spinal stenosis, thickened ligaments, bone spurs, or a slipped vertebra. A laminectomy is the most common form: the surgeon removes part or all of the lamina, the bony arch at the back of a vertebra, to create more room for the crowded nerves. A smaller version that removes only a portion is called a laminotomy.
What happens during the procedure
Laminectomy is usually performed under general anesthesia through an incision in the back over the affected level. The surgeon carefully removes the bone and any thickened ligament or disc material narrowing the canal, taking pressure off the nerves. Where the spine is stable, decompression alone may be enough. If a vertebra has slipped or the segment is unstable, a fusion may be added at the same time to keep it steady. Depending on your anatomy, a minimally invasive approach using smaller incisions and tubular retractors may be possible, which can mean less muscle disruption.
Benefits and considerations
Decompression may reduce symptoms caused by pressure on the nerves, including leg pain, numbness and heaviness with walking. It does not reverse arthritis or restore a worn disc, and back pain from another source may remain. Risks include infection, bleeding, a dural tear, nerve injury, recurrent narrowing and instability. A fusion may be recommended when instability is present or expected. A second opinion can review the proposed extent of surgery and the alternatives.
Recovery and what to expect
Walking and rehabilitation are introduced when it is safe. Length of stay and return to activity depend on how much decompression is performed, whether fusion is included, your health and early recovery. Your surgeon will set out an individual plan for medication, wound care, activity, driving, work and physiotherapy. A second opinion can review the proposed levels and whether decompression alone or stabilization is being considered.
How we approach your care
- 01
Find the true source
We begin with a thorough history and examination, supported by imaging where appropriate, to pinpoint the precise source of the problem.
- 02
Consider appropriate options
Where clinically appropriate, we consider established non-surgical options before surgery. The plan depends on the diagnosis, symptoms, health and priorities of the individual patient.
- 03
A plan built around you
Every step is explained clearly, so you always understand your options and what comes next.
This may help if
- MRI shows narrowing (stenosis) squeezing the spinal cord or nerve roots
- Leg pain, heaviness, or numbness limits how far you can walk or stand
- Symptoms have not eased with physiotherapy, activity changes, or injections
- Your general health makes you suitable for surgery
Suitability can only be assessed after reviewing your symptoms, examination, relevant imaging and previous treatment.
Common questions
What is a laminectomy?
A laminectomy is decompression surgery that relieves pressure on the spinal cord or nerve roots. The surgeon removes part or all of the lamina - the bony arch at the back of a vertebra - to make more room for crowded nerves narrowed by stenosis, thickened ligament, or bone spurs. A smaller version that removes only a portion is called a laminotomy.
Can a laminectomy be done in a minimally invasive way?
In many cases, yes. Depending on your anatomy and the level involved, a minimally invasive approach using smaller incisions and tubular retractors may be possible, which can mean less muscle disruption. Whether it suits you depends on how much narrowing there is and where it sits. Your surgeon will explain which approach fits your situation.
Will I also need a spinal fusion?
Not always. Where the spine is stable, decompression alone is often enough. If a vertebra has slipped (spondylolisthesis) or the segment is unstable, a fusion may be added at the same time to keep it steady. The aim is to remove only what is needed to free the nerves while keeping the spine stable.
Should I get a second opinion before a laminectomy?
A second opinion can review whether your symptoms, examination and imaging support surgery, how many levels are involved, and whether decompression alone or decompression with fusion is proposed.
How long does recovery take after decompression surgery?
Walking and rehabilitation are introduced when it is safe. Length of stay and return to activity depend on the extent of decompression, whether fusion is included, your health and early recovery. Your team will provide an individual plan.
What are the risks of a laminectomy?
Risks include infection, bleeding, and a leak of the fluid around the nerves (dural tear). Less commonly, symptoms can return if narrowing develops again, and removing too much bone can affect stability, which is one reason a fusion is sometimes recommended alongside. Your surgeon will discuss the risks specific to your case.