Abstract
To evaluate tonsillar wound healing histopathology in a canine model following microdebrider intracapsular and electrocautery tonsillectomy techniques. Randomized, controlled, single-blinded, paired comparison of histopathology. Twelve beagles underwent tonsillectomies by microdebrider on one side and electrocautery on the other. Punch biopsies were taken of the tonsillar fossae on postoperative days 3, 9, and 20. Specimens were graded with a novel mucosal wound healing scale (inter-rater reliability, r = 0.83) and appropriate statistical analysis performed. Combined mucosal wound healing scale scores showed significantly faster healing on the microdebrider side when compared to the electrocautery side on postoperative day 3 and day 9 (P < 0.05), which equalized by day 20. In a canine model of tonsillar wound healing, microdebrider intracapsular tonsillectomy produced significantly faster healing than electrocautery tonsillectomy in the early postoperative course. The "biologic dressing" theory of intracapsular tonsillectomy wound healing may account for observed differences in healing and suggests a mechanism for improved clinical outcomes.
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