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Three Strategies to Induce Neurotrophic Keratitis and Nerve Regeneration in Murine Cornea

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Neural outcomes after plasma knife dissection: a pathologic study and clinical correlation.

M Boyd Gillespie¹, Natalka D Stachiw, Justin Way

¹Department of Otolaryngology-Head and Neck Surgery and Pathology, Medical University of South Carolina, Charleston, SC, USA.

|January 15, 2010

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The plasma knife is a safe and effective tool for nerve dissection and parotid surgery, showing minimal nerve damage in rat studies and good outcomes in patients. This surgical technology offers advantages in cutting and coagulation with reduced thermal spread.

Area of Science:

Neurosurgery
Surgical Technology
Pathology

Background:

Assessing pathologic tissue damage from nerve dissection techniques.
Evaluating the safety and effectiveness of plasma knife in parotid surgery.

Purpose of the Study:

Compare nerve damage from bipolar forceps vs. plasma knife in rat sciatic nerves.
Analyze facial nerve outcomes after plasma knife parotidectomy.

Main Methods:

Prospective, randomized, single-blind study on 40 rat sciatic nerves.
Pathological analysis of nerve injury using Carlander classification.
Retrospective review of 30 patients undergoing plasma knife parotidectomy.

Main Results:

No significant thermal or neural injury observed in rat sciatic nerves (p=1.0).

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Minor perineural mast cell increases in 8% of plasma knife dissected nerves.

Temporary, mild facial nerve weakness (HB 2-3) in 33% of patients, resolving within 1-3 months.

Conclusions:

Plasma knife is a safe and effective alternative for nerve dissection.
Offers advantages in simultaneous cutting and coagulation with minimal thermal spread.
Demonstrates promising results for parotid surgery with acceptable nerve outcomes.