Spinal cord stimulators require two procedures to test and implant the device: the trial and the implantation.

SPINAL STIMULATOR TRIAL CORD

The first step is a trial period. Your surgeon will implant a temporary device for you to test out. Guided by a specific type of X-ray called fluoroscopy, your surgeon will carefully insert the electrodes in the epidural space of the spine. The location of your pain affects where these electrodes will be placed along the spine. Your surgeon may ask for your feedback during the procedure to best position the electrodes. This trial procedure typically requires only one incision in your lower back to place the electrodes. The generator/battery will be outside the body, typically on a belt, you’ll wear around your waist. For about a week, you will evaluate how well the device reduces your pain. The trial is considered a success if you experience a 50% or greater reduction in pain level. If unsuccessful, the wires can easily be removed in the clinic without damage to the spinal cord or nerves. If successful, surgery is scheduled to permanently implant the device.

SPINAL CORD STIMULATOR IMPLANTATION

During the permanent implantation procedure, the generator is placed underneath the skin and the trial electrodes are replaced with sterile electrodes. Unlike the trial electrodes, these will be anchored by sutures to minimize movement. The implantation can take about 1-2 hours and is typically performed as an outpatient procedure. After the local anesthesia has been administered, your surgeon will make one incision (typically along your lower abdomen or buttocks) to hold the generator and another incision (along your spine) to insert the permanent electrodes. The incisions are about the length of a driver’s license. As in the trial procedure, fluoroscopy is used to determine where the electrodes are placed. Once the electrodes and generator are connected and running, your surgeon will close the incisions. Your surgeon may provide sedation to keep you comfortable and ask for your feedback during placement of the electrodes.