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Michael J. Gleeson, MB, BDS, FRCS; Ugo Fisch, MD; Heidi Felix, PhD

Arch Otolaryngol Head Neck Surg. 1987;113(5):530-532.

Abstract
• The Cavitron ultrasonic surgical aspirator system was used to clear superficial tissue from the greater auricular nerve in four human subjects. Following stimulation, the nerves were removed together with an untreated section and processed for examination by light microscopy. Significant damage had been sustained by these nerves, which was not apparent in the control sections. Disruption of the perineurium, intraneural hemorrhage, endoneural edema, and degenerative changes of the myelinated nerve fibers were seen. Damage to neural tissue was evident 0.5 to 1.5 mm in advance of the point of contact with the cutting tip.

(Arch Otolaryngol Head Neck Surg 1987; 113:530-532)

Author Affiliations
From the Department of Surgery, Lewisham and North Southwark Health Authority, Guy's Hospital, London (Dr Gleeson), and the Ear, Nose, and Throat Department, University of Zurich (Drs Gleeson, Fisch, and Felix).

Footnotes
Accepted for publication Nov 17, 1986.

Reprint requests to Department of Surgery, Lewisham and North Southwark Health Authority, Guy's Hospital, St Thomas Street, London SE1 9RT, England (Dr Gleeson).

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