Ultrasound-Guided DREZotomy: Technical Note.

Area of Science:

• Neurosurgery
• Pain Management
• Spasticity Treatment

Background:

• Dorsal root entry zone (DREZ) lesioning is a treatment for specific pain conditions and spasticity.
• Microsurgical and radiofrequency (RF) coagulation are common DREZotomy techniques.
• RF lesioning carries risks, including unintended damage to spinal cord structures.

Observation:

• Technical challenges in RF DREZotomy can lead to complications.
• Intraoperative ultrasound (US) offers a new method to guide RF lesions.
• US allows differentiation of spinal cord gray and white matter.

Findings:

• Intraoperative US after laminotomy accurately identifies the DREZ.
• US guides electrode angle and depth for precise RF lesion placement.
• This technique optimizes lesion targeting and minimizes collateral damage.

Implications:

• Intraoperative US enhances the safety and efficacy of DREZotomy.
• Real-time US guidance reduces the risk of complications in RF DREZ procedures.
• This approach represents a significant technical improvement for neurosurgeons performing DREZ lesions.