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Lumbar Fusion Surgery

In the backbone, spongy pads of tissue called discs lie between the small bones (called vertebrae). The disc helps absorb pressure and keeps the bones from rubbing against each other. They have a tough outer ring and a soft jelly-like inside. Acute disc herniation, which is more commonly called a slipped disc, happens when the tough outer ring of a disc tears. The jelly-like middle bulges out through the tear and this may press on nearby nerves, causing pain and weakness in the muscles. One may also experience symptoms including severe back pain, shooting leg pain and weakness in the lower limbs.

What is lumbar fusion surgery?

Lumbar fusion of the lumbar spine is designed to stop the movement at a painful, unstable spinal joint. By linking together (fusing) two or more of the vertebrae, your surgeon is trying to eliminate the motion that occurs within that portion of the spine. Once a segment of the spine is stabilized the patient usually experiences some relief of pain. The surgeon may opt to use specialised spinal instruments (screws, rods, plates) to immobilize the spine, this immobilization will enhance the healing process. Spinal instrumentation acts as an internal splint.

Surgeons use this procedure when patients have spinal vertebrae injuries, protrusion and degeneration of the discs, curvature of the spine or a weak spine caused by injections or tumours.

Why is this surgery suitable for me?

Surgery is an option if:

  • painkillers, rest, exercises and injections don’t help
  • there is a likelihood of serious complications involving the nerves if left untreated
  • when the pain in the back, hips, buttocks and legs is having a profound effect on your quality of life

The aim of the procedure is to reduce the pain in the lower back and legs.

How is it performed?

Lumbar fusion can be carried out with an anterior (from the front) approach or a posterior (from the back) approach. Your surgeon will determine which approach is the best method for you. An anterior approach does carry a slightly higher risk of complication, but generally gives a better result and quicker healing time. Both procedures are performed under general anaesthetic and require a minimum one night stay in hospital.

Anterior approach

A 10-12cm incision is made into the abdomen. Organs and blood vessels are expertly moved aside by a vascular surgeon, revealing the front of the lumbar spine. The degenerate discs are carefully removed and replaced with a spacer. The spacer may be a fusion cage or a prosthetic disc replacement. If a cage is used, it is filled with synthetic bone material (bone putty) and then inserted into disc space. The cage holds the upper and lower vertebra tightly together, while the bone material aids to fuse it all together. Screws may also be fixed in place to keep it all secure and stable.

Posterior approach

A 10-12cm incision is made into the back. They surgeon must cut through layers of muscle to reach the spine. The degenerate discs are carefully removed and replaced with a spacer. The spacer may be a fusion cage or a prosthetic disc replacement. If a cage is used, it is filled with synthetic bone material (bone putty) and then inserted into disc space. The cage holds the upper and lower vertebra tightly together, while the bone material aids to fuse it all together. Screws may also be fixed in place to keep it all secure and stable.

What are the risks?

  • infection of your wound after surgery, which is not usually serious and can be treated with antibiotics (deeper spinal infection is more serious but very rare) (2-3%)
  • damage to nerves and blood vessels, which occurs in rare cases (1%)
  • paralysis, which means loss of use of the legs, loss of sensation and loss of control of bowels and bladder is low (1%)
  • implant failure, if the body rejects the implant, a further operation may be required. Alternatively if the implant moves and press on the nerves, the initial symptoms may return
  • failure of fusion, if the bones fail to fuse together, neck pain can recur and a further operation may be considered (15%)
  • rare complications associated with general anaesthetic, such as heart attack, blood clot in the lung or an allergic reaction
  • dural tear (tear in the tissue covering the spinal cord), which if damaged during surgery can easily be repaired with no significant side effects. If this does not heal itself, then a further operation may be required (6%)

Contact us

If you would like to know more about our lumbar fusion procedure then contact us today by phone on 020 3370 1030 or email spinespecialists@hje.org.uk

Spine Clinic

The Spine Clinic at St John & St Elizabeth Hospital is a centre for excellence in the diagnosis, intervention and aftercare of all spinal conditions.

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Patient information

Our Hospital is renowned for providing exemplary levels of care across more than 90 services. From orthopaedics, to urology, ENT, as well as a private GP practice and our urgent care centre, Casualty First, our services are led by some of London’s leading Consultants. For more information, and to find a service suitable for your care, find out more about the services that we offer.

Make an enquiry

If you have any questions relating to treatment options or pricing information then get in touch with us by filling out one of our contact boxes or giving us a call on 020 3370 1030.

Our Appointments Team have a dedicated and caring approach to finding you the earliest appointment possible with the best specialist.

 If you are self-paying you don’t need a referral from your GP for a consultation. You can simply refer yourself* and book an appointment.

If you have medical insurance (e.g. Bupa, Axa PPP, Aviva), you will need to contact your insurer to get authorisation for any treatment and, in most cases, you will require a referral letter from your GP.

If you do not have a GP, then we have an in-house private GP practice that you can use. Alternatively we can suggest the most appropriate course of action for you to take, given your location and individual circumstance.

*Please note – for investigations such as X-rays and MRI’s a referral will be required. However, we may be able to arrange this for you through our on-site private GP.

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