Endoscopic Spine Surgery

What is Endoscopic Spine Surgery?

Endoscopic spine surgery is the most minimally invasive approach to spinal surgery, using a small high-definition camera (endoscope) and specialised instruments introduced through a working channel of approximately 8 to 10 millimetres — smaller than a thumb. The entire procedure is performed under endoscopic visualisation on a high-definition monitor, without the need for a larger incision.

This technology allows experienced surgeons to decompress spinal nerves, remove herniated disc material, and relieve stenosis through incisions that are often less than 1 centimetre in length. Endoscopic spine surgery is able to achieve equivalent clinical outcomes compared to standard open and microsurgical techniques while offering significant advantages in recovery time and postoperative pain.  The long term benefits of this for the patient is significant.

One Brain and Spine Neurosurgeons are highly trained and skilled in advanced endoscopic spine techniques for both the lumbar and cervical spine, including endoscopic discectomy, endoscopic laminotomy and decompression, endoscopic cervical foraminotomy and endoscopic fusions.  Our Neurosurgeons will critically analyse your MRI findings in conjunction with your clinical symptoms and offer you the best option to maximise your immediate and long-term recovery.

What Conditions Can Be Treated Endoscopically?

There are standard conditions which endoscopic spine surgery may be suitable. 

These include:

• Lumbar disc herniation — endoscopic transforaminal or interlaminar discectomy
• Lumbar spinal stenosis — endoscopic laminotomy and decompression
• Cervical disc herniation — endoscopic posterior cervical foraminotomy
• Foraminal stenosis — endoscopic lumbar or cervical foraminotomy
• Far lateral disc herniations — accessible endoscopically when difficult by open technique

In certain situations, more complex conditions which may be suitableyou’re your neurosurgeon may discuss this with you.  These include:

• Lumbar spondylolisthesis (slippage) – endoscopic decompression and fusion
• Intra-dural cysts – endoscopic drainage of intra-dural cyst
• Intra-dural tumours – endoscopic resection of intra-dural tumour

Not all spinal conditions however are suitable for endoscopic surgery. Complex multilevel disease, significant instability, and deformity generally require open or minimally invasive techniques with fixation.

Endoscopic vs Microscopic Spine Surgery

Both techniques achieve the same surgical goal — nerve decompression or disc removal. The key differences are:

• Incision size — endoscopic typically less than 1cm; microscopic typically 2–3cm
• Muscle disruption — endoscopic uses one or two working channel through a single dilated tube meaning there is very little muscle disruption (10% when compared to microscopic); microscopic uses retractors which disrupt the entire length of muscle from skin to the spine.
• Postoperative pain — endoscopic typically has less early postoperative back/neck pain
• Recovery — faster return to daily activities with endoscopic in appropriate patients
• Day case potential — endoscopic procedures may be more frequently performed as day surgery
• Operative time — initially longer for endoscopic surgery compared to microscopic surgery but comparable after 20 cases.  All One Brain and Spine surgeons have performed well in excess of these numbers
• Patient selection — endoscopic and microscopic surgery are equally effective in most situations.  For over-weight patients, endoscopic surgery may harbour even more benefits due to decreased tissue trauma, ease of visualisation and earlier mobilistation.

How is Endoscopic Spine Surgery Performed?

For lumbar endoscopic microdiscectomy, the patient is prone under general or sedation anaesthesia. Under fluoroscopic guidance, a series of sequential dilators are introduced through a small skin incision to a working channel positioned at the target disc level. A rigid endoscope — approximately 7.5 to 10mm in diameter — is inserted, providing continuous high-definition visualisation. Specialised endoscopic instruments (drills, punches, graspers, and radiofrequency probes) perform a decompression and remove the herniated disc material (if required) under direct vision.

For the transforaminal approach, the instrument pathway passes through the foramen — the nerve exit point — allowing access to the disc from a posterolateral direction without entering the spinal canal. 

Procedures typically take 45 to 90 minutes. Most patients are discharged the same day or the following day.

Outcomes of Endoscopic Spine Surgery

For appropriately selected patients, endoscopic spine surgery achieves equivalent rates of nerve decompression and symptom relief to open and microscopic techniques — with superiority in early recovery metrics. Published studies demonstrate over 85–90% good-to-excellent outcomes for endoscopic discectomy, with comparable recurrence rates and complication profiles to microscopic surgery.

Risks and Complications

• Recurrent disc herniation — approximately 5%; similar to microscopic microdiscectomy
• Incomplete decompression — more common in complex cases; may require revision or conversion to open approach
• Nerve injury — rare in experienced hands (<0.5%)
• Infection — approximately 0.5–1%; lower than microscopic surgery due to smaller incision
• Conversion to open surgery — in a small proportion of cases where endoscopic technique does not provide sufficient access