Understanding spinal fusion

What it is, how safe and the pathway to recovery.

Here's the short version.

What is a spinal fusion?

Spinal fusion is a procedure that involves removing a spinal disc and replacing it with a spacer, which is held in place with screws and sometimes rods.

The surgeon doesn’t fuse the spine directly but places a spacer and screws to act as a scaffold. Over the next 6-12 months, natural bone grows through this scaffold to complete the fusion.

Spinal fusion is effective for three types of spinal pain:

This often happens when the spinal disc wears out and collapses onto the nerve, much like a car on a failing jack squashing a mechanic underneath. Spinal fusion lifts the disc space back up, freeing the nerve. Spacers used range from 8-20mm in height.

Pain arises from bone movement, not bone-on-bone contact. Spinal fusion locks the bones together, eliminating movement and reducing pain. Artificial discs are also used in some cases (discussed further here).

Damaged spinal discs can cause pain, typically from movement. Surgery removes the disc and locks the spine to stop movement and alleviate pain. Artificial discs may also be used (discussed here).

Where is the incision for spinal fusion?

To reach the spine, we make an incision either from your back, front, or through various angles in between.

PLIF (Posterior Lumbar Interbody Fusion):

The spine can be accessed directly from the back, with the incision placed in the middle of the back. This procedure is called Posterior Lumbar Interbody Fusion.

ALIF (Anterior Lumbar Interbody Fusion):

The spine can be accessed from the front, with the incision placed in the abdomen. This is called Anterior Lumbar Interbody Fusion.

TLIF (Transforaminal Lumbar Interbody Fusion), OLIF (Oblique Lumbar Interbody Fusion), DLIF (Direct Lateral Interbody Fusion) and XLIF (Extreme Lateral Interbody Fusion):

Various other angles can also be used to access the spine between the front and back, as surgeons have explored more efficient and less invasive approaches.

The end result is always the fusion of the spine; the difference lies in how the spine is accessed. Each method has its pros and cons, and I can guide you in selecting the most suitable approach for your case.

Is it successful?

While spine surgery does carry risks, modern technology has made spinal fusion a much safer and more effective treatment for certain spinal conditions.

When the bone on either side forms a solid connection, that’s considered a successful spinal fusion. There’s usually a 90%+ chance the surgery achieves fusion by the 12-month mark.

Today, the key to successful spinal fusion surgery lies in the decision-making process. It’s up to the surgeon to carefully determine if you’re a suitable candidate. There are many relevant factors, including your symptoms, examination findings, scan results, lifestyle, and future aspirations.

Also, keep in mind that fusion is a natural process. Your spine’s normal response to many different types of spine conditions is to fuse itself, including fractures, infection and arthritis. Surgery just tries to replicate this.

Is it safe?

Modern spinal fusion surgery is very advanced compared to 30, 20, even 10 years ago. The technology is exceptional, and all spine surgeons in Australia have access to the latest equipment, including computer-guided systems or robots. The engineering of all this technology is world-class.

"Most people who have never been to an operation theatre won’t realize just how advanced a modern spinal fusion operation is. All of this technology and engineering has made the vast majority of surgery very safe."

Nowadays, the single biggest factor determining safety and outcome is surgeon experience and patient selection (the decision-making process).

How is recovery post-surgery?

To get the best result you need to commit to a full recovery period. Recovery is like compound interest; if you do the time, you’ll get the best result. If you shortchange yourself and bail out early, you will miss out on significant benefits long term.

This doesn’t mean you will be just resting during the recovery. I will actually encourage you to be as active as possible. Regaining your confidence in movement is crucial, and you’ll be surprised at how much you’ll be able to do soon after surgery

I will take you through all this when I see you.

Frequently Asked Questions

There are 2 potential long-term side effects I discuss with all spinal fusion patients pre-surgery:

  • Adjacent level disease: After spinal fusion, nearby spinal segments may bear extra stress, which could lead to degeneration or nerve issues. We carefully manage this risk using precise surgical techniques and comprehensive post-operative care. Maintaining spinal alignment and strength helps reduce this risk.
  • Failure of fusion: This occurs when the bones do not fully fuse after surgery, though it is rare with modern surgical techniques. I take steps to encourage proper healing, like using bone grafts and stabilisation hardware. Addressing lifestyle factors like smoking or general bone health can further manage the likelihood of this occurring.

These are just general summaries of the risks. I can go into more detail and provide personalised advice taking into account your unique health profile during the consultation process.

Yes, it is a very common procedure, typically performed weekly by most spine surgeons. The main variation between surgeons is the approach they take to access your spine.

The goal of surgery is to enhance your quality of life, helping you return to activities like playing sports, working in the garden, or moving pain-free around the house. I will consider your lifestyle and goals when planning your treatment.

Spinal fusion typically involves removing the damaged spinal disc, inserting a spacer to restore the spine’s normal configuration, and securing it all with screws for stability.

Don’t worry, the screws are made from titanium, so you won’t trigger alarms at the airport. 

Pain levels can vary depending on factors such as the type of fusion (ALIF, PLIF, TLIF , OLIF), the number of levels fused, and your personal circumstances, including body type, lifestyle, age, and the specific condition being treated. I will guide you through these details.

This depends on your spinal condition. We will explore alternatives during your consultation, based on your specific needs and condition.

There are several surgical options available, and often more than one good choice. However, alternatives to surgery include medications, steroid injections, and physiotherapy. It’s important to weigh your options to determine the best path to restore your quality of life.

After an assessment, I can provide a more specific timeline, but typically, hospital stays range from 1 to 4 days.

Most scars from spinal surgery heal well. I am as keen as you are to ensure your incision heals beautifully.

For the lumbar spine, I use dissolvable sutures. For the cervical spine, a small stitch will need to be removed after 7 days, which I will do in my rooms.

Yes, physiotherapy or pilates will play an important role in rebuilding your confidence in movement and supporting your recovery. I am happy to collaborate with your physio or pilates instructor.

What next?

If you are in pain or your symptoms have been dragging on for a while, please contact my team and book an appointment with me. We will go over your case and help you to make an informed decision.