Describe the two main types of epidural electrodes

The two main types of electrodes are catheter-type electrodes and plate-type electrodes.

• Catheter-type electrodes (also known as percutaneous electrodes) are placed via a percutaneous needle approach under fluoroscopic guidance and are ideal for use in trial stimulation to determine whether permanent implantation is appropriate

• Plate-type electrodes (also known as laminotomy, paddle, or surgical electrodes) require a surgical laminotomy for placement. Advantages of plate-type electrodes include lower risk of migration in the epidural space and increased electrical efficiency. Lead systems have evolved from quadrapolar (four electrodes) or octapolar leads (eight electrodes) to current multilead systems

See Figure 35-1.

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