Spinal Cord Stimulators overview

Using neuromodulation to manage chronic pain

Spinal cord stimulation (SCS) is a technique for providing relief from chronic pain associated with a range of medical conditions. The treatment was developed in the late 1970s based on what is now known as the field of neuromodulation, which is also used in another similar treatment technique called peripheral nerve stimulation.

Neuromodulation is a mechanism for changing pain signal transmission in the spinal cord using small electric currents delivered to the cord using small electrodes.

Research indicates that, although it does not help everyone, on average pain is reduced by around 50%, and around 65% of patients report decreased pain after having a spinal cord stimulator implanted.

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Spinal cord stimulator indications and preparation

Preparing for spinal cord stimulation

Spinal cord stimulation may help manage pain associated with:

  • Angina
  • Neuropathic pain
  • Complex regional pain syndrome
  • Pain from previous spinal surgery, often affecting the leg.
  • Post laminectomy syndrome

Pain may not always be completely eliminated. However, where pain is substantially reduced, spinal cord stimulation may help reduce reliance on pain medication.

Spinal cord stimulation is often recommended where other treatments have not helped.

Before the procedure, you will be asked to complete a pain chart and pain diary covering a 7-day period. The pain chart identifies the parts of your body affected by pain, while the diary records your pain levels and any changes each day. You will also complete a short survey describing the type of pain you experience.

You should also:

  • Avoid other medical procedures, such as dental treatment or a colonoscopy, within 48 hours before or after the procedure.
  • Not eat, drink or smoke during the 6 hours immediately before the procedure. Regular medication may be taken with small sips of water.
  • Not take diabetes medication until after the procedure.
  • Stop medication containing aspirin or other blood thinning medication at least 11 days before the procedure.
  • Not drive yourself to or from the appointment.

Please let us know ahead of the procedure if:

  • You have any allergies.
  • You have high blood pressure.
  • You have or have previously had bleeding or blood clotting issues, such as deep vein thrombosis (DVT) or pulmonary emboli.
  • You are taking any antibiotics.
  • You have a pacemaker or defibrillator.
  • You are ill, in which case we may need to postpone the procedure.

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Spinal cord stimulator procedure

What to expect during your procedure

Spinal cord stimulation is completed in two stages, beginning with a temporary trial before progressing to permanent implantation where suitable.

1. Electrode placement

A small incision is made in the back and electrodes are placed along the target area of the spinal cord using a needle.

2. Overnight hospital stay

You will usually remain in hospital for one night following the first-stage procedure.

3. Trial stimulation period

The electrodes are connected to a portable stimulation device for around 7-10 days to assess how effectively the treatment reduces pain.

4. Assessing pain reduction

If the trial produces a marked reduction in pain levels, you may proceed to the second stage.

5. Permanent stimulator implantation

A miniature stimulator, called an implantable pulse generator (IPG), is permanently implanted under the skin, generally in the lower back or buttock.

6. Battery and ongoing use

The battery can be recharged without removing the device and may last around 5-15 years, depending on the stimulator settings.

7. Electrode removal if the trial is unsuccessful

If the first stage does not produce a marked reduction in pain, the electrodes will be removed in a short procedure.

After your spinal cord stimulator procedure

Recovery and monitoring after the procedure

You will need to stay in hospital for 1-2 days after the final procedure. Full recovery can take up to 6 weeks, with daily gentle exercise, such as walking. We will also provide you with an information sheet on the implantable pulse generator and what you must avoid (for example metal detectors at security checkpoints).

After both stages there will be some pain at the insertion site for around 48 hours. During this time you should not lift anything, and not stretch, twist or bend over further than 45 degrees. The dressing on the incision must be kept dry (i.e. no showers or baths) and you will be checked frequently for any signs of infection at the insertion site.

You should arrange a visit to your doctor 3-4 days after surgery to review the incision site and to have any stitches removed. At the 6-8 week mark we will make an appointment for you to come in for a review.

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Spinal cord stimulator risks

Possible complications to be aware of

If you experience severe pain or weakness, swelling or infection at the incision site, or a temperature above 38°C, contact us urgently or attend the nearest emergency department. Possible complications may include:

Device failure

The stimulator may not function as intended.

Bleeding

Minor bleeding may occur around the insertion site.

Infection

A small risk of infection is present.

Pain at insertion site

Temporary soreness or discomfort may occur after the procedure.

Allergic reaction

A reaction to the anaesthetic may occur.

Blood clots

Deep vein thrombosis (DVT) or pulmonary embolism may rarely occur.

Permanent nerve damage

Permanent nerve injury is possible but very rare.

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  • Comprehensive pain assessments
  • Individual treatment planning
  • Medication review and optimisation

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