Oliver Bee RMTRegistered Massage Therapist

Massage therapy · Kitchener–WaterlooLaminectomy of the Lumbar Spine

Low Back & Pelvis

What It Is

Laminectomy is a type of surgery that removes the lamina, which is the back part of the vertebra covering your spinal canal. This opens up the spinal canal to relieve the pressure on the spinal nerves (or, in the neck, the spinal cord) (MedlinePlus, 2024).

The pressure can be caused by a number of different problems, such as bony overgrowths (bone spurs) within the canal or a herniated (slipped) disc (MedlinePlus, 2024). The operation can be done in the neck or the lower back (MedlinePlus, 2024); this sheet is about the lower back (lumbar spine), where it is a type of lumbar decompression surgery (NHS, 2026). More than one level of the spine may need to be operated on, depending on the amount of degeneration.

A laminectomy is often used when other treatments have not relieved your symptoms. It may also be recommended if your symptoms are severe and interfere with your daily life or work (MedlinePlus, 2024).

Before this kind of surgery is done, other treatments, such as physiotherapy, losing weight if you're overweight, or steroid injections, are usually tried first (NHS, 2026). The exception is cauda equina syndrome, where the nerves at the base of the spine are badly squashed. This is a medical emergency that may need urgent surgery (American Academy of Orthopaedic Surgeons, n.d.).

Warning signs: if you have back problems and develop numbness around your genitals or back passage, lose control of your bladder or bowels, or develop weakness in your legs, call 911 or go to the emergency room at your nearest hospital (American Academy of Orthopaedic Surgeons, n.d.).

Laminectomy of the Lumbar Spine Anatomy

There are 5 vertebrae in the lower back, and 7 in the neck. Each vertebra is made of one piece of bone, but different parts of the bone are called different things. For example, the projection at the back of the bone is called the spinous process, and the arch next to it is called the lamina.

The spinal canal is the tube of bone that the spinal nerves run through. When the canal becomes narrower, this is known as spinal stenosis. Stenosis usually develops with age or arthritis: the discs shrink, the small facet joints at the back of the spine wear and form bone spurs, and the ligaments around them thicken. Together these crowd the space for the nerves (American Academy of Orthopaedic Surgeons, n.d.; NHS, 2026). A bulging or slipped disc can also press on a nerve. By removing bone at the back of the spine, there is more space for the nerves. This can relieve pinching of the nerve and reduce nerve pain.

Undergoing a Laminectomy Procedure

During the laminectomy, you are given a general anaesthetic, so you are asleep for the procedure (NHS, 2026; MedlinePlus, 2024). The team will monitor your blood pressure, heart rate and blood oxygen for the whole procedure. After you are asleep:

  • The surgeon makes a cut in your back over the affected vertebrae and moves the muscles away from the spine as needed. Using small instruments, the lamina is removed (MedlinePlus, 2024).
  • If the surgery is being done to treat a herniated disc, the part of the disc pressing on the nerve, and any loose pieces, may also be removed, along with bone spurs (MedlinePlus, 2024; NHS, 2026).
  • If one of your vertebrae has slipped forward on another, or the spine is unstable, a spinal fusion may also be needed. During spinal fusion, two or more vertebrae are permanently joined together using bone graft, often with screws (American Academy of Orthopaedic Surgeons, n.d.; MedlinePlus, 2024).
  • The cut is closed with stitches or clips (NHS, 2026).

After a laminectomy

  • If you develop numbness around your genitals or back passage, or problems controlling your bladder or bowels, call 911 or go to the emergency room at your nearest hospital.
  • Contact your hospital team straight away if you get new pain, weakness or numbness in your legs, or if the skin around your stitches is hot, itchy, red or oozing fluid (NHS, 2026).

Not a diagnosis — for more information, contact me or another trusted healthcare provider.

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