Nucleoplasty

What is nucleoplasty?

Nucleoplasty, also known as percutaneous plasma disc decompression, is a minimally invasive interventional radiology procedure used to treat contained disc herniations that have not responded to conservative treatments such as rest, physiotherapy, medications or spinal injections.

The procedure involves inserting a specialised plasma energy device through the skin into the affected spinal disc. Under image guidance, the device creates small vacuum-like channels within the disc, reducing pressure and relieving symptoms caused by the herniated portion of the disc pressing on nearby nerves.

Benefits of nucleoplasty include:

• Minimally invasive procedure
• Does not require general anaesthesia
• Short recovery time
• Effective symptom relief for patients not ready for open surgery

How it works

The spine consists of vertebrae separated by intervertebral discs, which act as cushions and allow for movement. Each disc contains a tough outer shell (annulus) and a gel-like centre (nucleus pulposus). In a contained disc herniation, part of the nucleus bulges through a weakened annulus but remains within the disc’s boundaries.

During nucleoplasty:

• A fine needle is inserted into the affected disc under fluoroscopic (X-ray) guidance.
• A plasma energy probe (electrode) is passed through the needle.
• The probe generates controlled bursts of plasma to remove small amounts of disc material and create tiny channels (vacuum tracts) inside the disc.

This reduces internal disc pressure, relieving pressure on spinal nerves and alleviating pain and nerve symptoms.

Why do you need nucleoplasty?

Nucleoplasty is recommended for patients with:

• Persistent lower back or neck pain with or without leg or arm symptoms
• Imaging findings (e.g. MRI) showing contained disc herniation
• Symptoms that have not improved with conservative therapy
• No evidence of spinal instability or sequestered (free fragment) disc material
• A desire to avoid or delay open spinal surgery

Common symptoms that may benefit from nucleoplasty include:

• Localised back or neck pain
• Pain radiating down the arm or leg (e.g. sciatica)
• Numbness, tingling, or mild weakness in the limbs

What are the risks and complications of nucleoplasty?

Nucleoplasty is generally safe, with a low complication rate. However, as with any invasive procedure, there are some risks:

• Bleeding at the needle insertion site
• Infection, though rare with sterile technique
• Nerve injury if nearby nerve roots are affected
• Injury to the vertebral endplate, which may result in persistent pain
• Allergic reaction to medications used
• In rare cases, complications may require further surgical or interventional procedures
• Although extremely uncommon, serious adverse events, including death, are possible in any medical procedure

All potential risks will be discussed with you before the procedure.

How do you prepare for nucleoplasty?

Before the procedure:

• You may be asked to undergo a blood test to assess clotting.
• Inform your doctor of any regular medications, especially blood thinners or diabetic drugs.
• Blood thinners may need to be paused 3–5 days before the procedure.
• Diabetic medications may also need to be withheld if you are required to fast.

Fasting for 4–6 hours before the procedure is usually required, especially if sedation is planned.

Plan to arrive early to allow time for registration and admission.

• Outpatients should arrive at least 20 minutes before their scheduled time.
• Day-case or inpatients should arrive about 2 hours in advance.

What can you expect during nucleoplasty?

Estimated duration

The procedure typically takes 30–60 minutes, followed by a short observation period.

Before the procedure

• You will be admitted to the radiology department and prepared for the procedure.
• An anaesthetist will administer conscious sedation to keep you relaxed and pain-free.
• Your vital signs and breathing will be closely monitored.

During the procedure

• Under image guidance (usually fluoroscopy), a needle is inserted into the affected disc.
• A plasma electrode is passed through the needle into the disc.
• The electrode creates tiny channels within the disc, reducing pressure and volume.
• A nerve block (a mixture of steroid and local anaesthetic) may also be administered to help manage discomfort in the days following the procedure.

After the procedure

• You will be monitored briefly in the radiology department before being transferred back to your room.
• Bed rest for 1–2 hours is typically recommended immediately post-procedure.
• Mild pain or bruising at the needle site may occur but usually resolves quickly.
• Depending on your condition and doctor's advice, you may be discharged on the same day or after an overnight stay.

Care and recovery after nucleoplasty

Expected recovery period

• Most patients begin to feel symptom relief within 1–2 weeks, though some improvement may be felt sooner.
• A nerve block given during the procedure may offer temporary relief until the full effect of nucleoplasty sets in.

Recovery tips

• Avoid strenuous activity and heavy lifting for several days.
• Follow your doctor's advice regarding return to work, driving, and physiotherapy.
• Monitor for any persistent or worsening pain, fever, or unusual symptoms and report them promptly.
• Gradually resume normal daily activities as tolerated.

What your recovery depends on

• The severity of the disc herniation
• Your baseline symptoms and response to the procedure
• Whether adjunct treatments (such as nerve blocks or physiotherapy) are used
• Your overall health, posture, and activity level

Most patients experience rapid recovery and can avoid or delay the need for more invasive spinal surgery.