Minimally Invasive Spine Surgery

What is minimally invasive spine surgery?

Minimally invasive spine surgery (MISS) is a surgical approach used to treat spinal conditions through small incisions, using specialised instruments and imaging guidance. It aims to relieve pressure on spinal nerves and stabilise the spine while minimising damage to surrounding muscles and tissues.

MISS is commonly used to treat conditions such as herniated (slipped) discs, spinal stenosis, sciatica, and degenerative disc disease.

How it works

In minimally invasive spine surgery, the surgeon accesses the spine through small incisions, typically less than 2-3 cm.

Instead of cutting through muscle, specialised dilators are used to gently separate muscle fibres. A tubular retractor or endoscope (a thin tube with a camera and light) is then inserted to provide a clear view of the spine on a monitor.

Using fine surgical instruments and real-time imaging (such as fluoroscopy), the surgeon removes or reshapes structures such as disc material, bone, or ligaments that are compressing the nerves. The incision is then closed with minimal disruption to surrounding tissues.

Minimally invasive spine surgery vs open surgery

Minimally invasive spine surgery offers several advantages over traditional open spine surgery:

While MISS offers many benefits, it may not be suitable for all patients, particularly those with complex or multi-level spinal conditions.

Why do you need minimally invasive spine surgery?

You may consider minimally invasive spine surgery if non-surgical treatments have not relieved your symptoms.

These non-surgical treatments may include:

• Physiotherapy
• Medications
• Activity modification
• Spinal injections

MISS is typically recommended if you have:

• Persistent back or neck pain affecting daily life
• Radiating nerve pain (e.g. sciatica)
• Numbness, tingling, or weakness in the arms or legs
• Imaging-confirmed spinal conditions (e.g. herniated disc, spinal stenosis)
• Progressive neurological symptoms

The goal of surgery is to relieve nerve compression, reduce pain, and restore function.

What are the types of minimally invasive spine surgery?

Several procedures fall under minimally invasive spine surgery, depending on the condition being treated:

• Microdiscectomy
  Removal of part of a herniated disc to relieve nerve pressure
• Endoscopic spine surgery
  A highly targeted technique using an endoscope for visualisation through very small incisions
• Minimally invasive laminectomy (spinal decompression)
  Removal of part of the vertebral bone to widen the spinal canal
• Foraminotomy
  Enlargement of the nerve exit pathways to relieve compression
• Minimally invasive spinal fusion
  Joining two or more vertebrae to stabilise the spine using implants
• Vertebroplasty or kyphoplasty
  Injection of bone cement to stabilise spinal fractures

Your surgeon will recommend the most appropriate procedure based on your diagnosis and overall health.

What are the risks and complications of minimally invasive spine surgery?

Minimally invasive spine surgery is generally safe, but like all surgical procedures, it carries some risks.

Possible complications include:

• Nerve injury (causing weakness, numbness, or persistent pain)
• Dural tear (leakage of spinal fluid)
• Recurrence of symptoms
• Incomplete symptom relief
• Infection
• Bleeding or blood clots
• Risks related to anaesthesia

The risk of complications is typically lower than with open surgery, but varies depending on the individual and the complexity of the procedure.

Frequently asked questions

Q1: Is minimally invasive spine surgery safe?

Minimally invasive spine surgery is generally safe and has a lower risk of complications compared to open surgery. Because it uses smaller incisions and causes less tissue damage, patients typically experience less pain, lower infection risk, and faster recovery. However, risks still vary depending on your condition and overall health.

Q2: Who is not suitable for minimally invasive spine surgery?

Minimally invasive spine surgery may not be suitable for patients with complex spinal deformities, severe instability, or conditions requiring multi-level surgery. Your surgeon will assess whether this approach is appropriate for your specific condition.

How do you prepare for minimally invasive spine surgery?

Proper preparation helps ensure a safer procedure and smoother recovery.

You may be advised to:

• Undergo medical evaluation (blood tests and imaging)
• Review and adjust medications (e.g. stop blood thinners if required)
• Fast for several hours before surgery
• Stop smoking, as it can impair healing
• Begin prehabilitation exercises if recommended

You should also arrange for someone to accompany you home and assist you during the initial recovery period.

What can you expect during minimally invasive spine surgery?

Estimated duration

Most minimally invasive spine procedures take 1 to 3 hours, depending on the complexity and number of spinal levels involved.

During the procedure

• You will usually receive general anaesthesia or moderate sedation, so you will not feel pain
• Small incisions are made over the affected area
• Tubular retractors or an endoscope are inserted
• Specialised instruments are used to treat the underlying problem
• The incision is closed with sutures or surgical glue

After the procedure (Include side effects, if any)

After surgery, you will be monitored in a recovery area. Many patients can go home on the same day or within 24-48 hours.

Common short-term effects include:

• Mild to moderate pain at the incision site
• Temporary stiffness or soreness
• Fatigue

Some patients may also experience:

• Temporary nerve irritation (e.g. tingling or shooting pain)
• Mild swelling or bruising

These symptoms are usually temporary and improve as healing progresses.

Care and recovery after minimally invasive spine surgery

Expected recovery period

Recovery time varies depending on the procedure and individual factors:

• Light activities: within a few days to 1-2 weeks
• Return to work: typically 2-6 weeks
• Full recovery: around 6 weeks to 3 months (longer for complex procedures)

Recovery tips

• Follow your surgeon's instructions closely
• Take prescribed medications as directed
• Gradually increase activity levels
• Avoid heavy lifting or strenuous movements initially
• Attend physiotherapy if recommended
• Maintain good posture and spinal alignment
• Keep the surgical site clean and dry

What your recovery will depend on

Your recovery will depend on:

• The type and complexity of surgery
• Your overall health and fitness level
• Adherence to post-operative care instructions
• Presence of underlying conditions (e.g. diabetes or osteoporosis)
• Lifestyle factors such as smoking and activity levels

Most patients experience significant improvement in pain and function, particularly when surgery is combined with rehabilitation and long-term spine care.

Frequently asked questions

Q1: How painful is minimally invasive spine surgery?

Most patients experience less pain compared to traditional open surgery. Pain is usually mild to moderate and localised to the incision site. It is typically well controlled with medication and improves significantly within the first few weeks after surgery.

Q2: How long does it take to recover from minimally invasive spine surgery?

Recovery time varies, but many patients return to light activities within 1-2 weeks and resume work within 2-6 weeks. Full recovery may take 6 weeks to 3 months, depending on the type of procedure and individual healing.

Q3: When will I feel relief after surgery?

Some patients experience immediate relief from nerve-related pain, such as sciatica, after surgery. For others, improvement may occur gradually over several weeks as inflammation settles and nerves heal.

Q4: Can symptoms return after minimally invasive spine surgery?

In some cases, symptoms may return if there is further degeneration of the spine or recurrence of the underlying condition, such as a disc herniation. Following rehabilitation and maintaining good spine health can help reduce this risk.