Full Endoscopic Spine Surgery

Full endoscopic spine surgery is the most minimally invasive way currently available to treat many spinal problems. Instead of opening the back and moving muscle aside to see the spine, the surgeon works through a single small tube — typically around 7 to 8 millimetres across, about the width of a pen — with a high-definition camera and light passed all the way down to the problem. The surgeon operates while looking at a magnified, brilliantly lit view on a screen, using fine instruments that pass down the same channel, with continuous sterile fluid (saline) flowing through to keep the view clear and cool the tissues.

This is a genuine step beyond both traditional open surgery and the microscope-assisted "microsurgery" that has been the standard for decades. With open and microsurgery, the surgeon still needs an incision large enough to see into, and muscle is cut or stripped off the bone and held back with retractors for the length of the operation. Full endoscopic surgery does away with almost all of that. The camera goes to the spine rather than the surgeon having to open a window down to it, so the muscles are gently dilated and parted rather than cut, and the incision is a fraction of the size.

It is used to treat a wide and growing range of problems — slipped (herniated) discs pressing on a nerve, narrowing of the spinal canal or nerve exits (stenosis), trapped nerves in the neck, thoracic and lower back, cysts, and, increasingly, even fusions — and it can often be done as a day case, sometimes under local anaesthetic and sedation rather than a full general anaesthetic.

• People with a herniated (slipped) disc pressing on a nerve and causing sciatica or arm pain that has not settled
• People with spinal stenosis — narrowing of the central canal or the nerve exits — causing leg or arm symptoms
• People who want the least invasive option and the fastest realistic return to normal life
• People for whom a bigger open operation carries higher risk (for example older patients, or those with other medical conditions), where a procedure under local anaesthetic may be safer
• Selected people needing revision surgery, or decompression next to a previous fusion, where working through virgin tissue away from old scar can be an advantage
• Suitability is always decided individually by the specialist, based on the exact problem, its location, and the imaging — not every problem is suited to an endoscopic approach

• Under X-ray or navigation guidance, the surgeon makes a tiny incision and passes a series of gentle dilators that split the muscle fibres apart rather than cutting them. A thin working tube is placed, and the endoscope — a rod carrying a high-definition camera, a light source, an irrigation channel and a working channel — is passed down to the spine. The camera sits millimetres from the target, so the view on the screen is highly magnified and superbly lit, often showing detail that is hard to appreciate even under a microscope. Continuous saline irrigation keeps the field clean and clear and helps limit bleeding. Working through the channel, the surgeon removes the disc fragment, shaves away the bone or thickened ligament that is trapping the nerve, or performs the intended procedure, checking the nerve is free before removing the scope. The single small opening usually needs just one or two stitches, or sometimes just a dressing.

• The smallest incision of any spinal technique — often under one centimetre, versus several centimetres for open surgery
• Muscle is split and preserved, not cut or stripped, so there is far less damage to the tissues that support the spine
• Markedly less blood loss — typically only a few millilitres, compared with the larger losses of open microdiscectomy
• Less post-operative pain and less need for strong painkillers
• Frequently a day-case procedure, with many people home the same day
• Faster return to work and normal activity than open or microsurgery in many studies, with high patient satisfaction
• Can often be performed under local anaesthetic with sedation, avoiding a general anaesthetic — a real advantage for higher-risk patients
• A superb, magnified, well-lit view of the nerves, and lower infection rates given the tiny wound
• Preserves the natural stability of the spine by leaving muscles, bone and ligaments largely intact

• No operation is risk-free; general surgical risks such as infection, bleeding, nerve irritation or a small chance of nerve injury still apply, although several of these are lower than with open surgery
• There is a chance a disc can herniate again at the same level, as with any discectomy technique
• Endoscopic surgery is technically demanding and has a genuine learning curve; it is best done by surgeons specifically trained and experienced in it
• Not every problem is suitable — very complex, highly unstable, or certain multi-level problems may still be better served by another approach
• Occasionally, a planned endoscopic procedure needs to be converted to a more open technique during surgery if required for safety

• Non-surgical care first where appropriate — physiotherapy, targeted injections and time, since many disc problems settle
• Microdiscectomy or microscope-assisted decompression (microsurgery)
• Tubular (minimally invasive) decompression using a small retractor and microscope
• Open surgery for problems not suited to a keyhole approach
• Biportal endoscopic surgery, a related keyhole technique using two small portals

Because so little tissue is disturbed, recovery is usually quicker and more comfortable than after open or microsurgery. Many people walk within hours and go home the same day, with the small wound needing minimal care. Light activity is encouraged early, and most people return to desk-based work within days to a couple of weeks, with heavier activity building up over the following weeks under guidance. The outcome for the underlying problem — for example relief of sciatica after removing a disc fragment — is at least as good as with traditional techniques in the published evidence, with the added benefit of a gentler recovery. As always, results depend on the specific problem and the individual, and your specialist will explain what is realistic for you.

• —NICE — Low Back Pain and Sciatica in Over 16s (NG59)
• —British Association of Spine Surgeons (BASS)
• —Gadjradj PS et al. — Full endoscopic versus open/microdiscectomy for lumbar disc herniation (systematic review evidence)

This information is for general patient education and is not a substitute for an individual consultation. Always seek personalised advice from a qualified spinal specialist.