Related Experiment Video
Updated: Aug 23, 2026
Learning Modern Laryngeal Surgery in a Dissection Laboratory
Published on: March 18, 2020
Performance after partial arytenoidectomy without mucosal closure in 27 Thoroughbred racehorses
Amy J Barnes1, Donnie E Slone, Tim M Lynch
1Peterson and Smith Equine Hospital, Ocala, FL 34474, USA.
Objective:
To examine the effect of partial arytenoidectomy without mucosal closure on postoperative racing performance and long-term complications in Thoroughbred racehorses treated for laryngeal hemiplegia, arytenoid chondropathy, or failed laryngoplasty.
Study Design:
Retrospective study.
Animals:
Twenty-seven Thoroughbred racehorses.
Methods:
Medical records of Thoroughbred racehorses that had partial arytenoidectomy without mucosal closure between 1992 and 2002 were reviewed. Horses were divided into groups: horses that had not raced (Group 1) and those that had raced (Group 2) before surgery. Lifetime race records were compared between groups. A standard starts index (SSI) and performance index (PI) were used for Groups 1 and 2, respectively, to objectively evaluate each horse's postoperative performance. Telephone interviews of owners and trainers were used for subjective performance evaluation and to determine prevalence of long-term complications.
Results:
Eleven (61%) Group 1 and 7 (78%) Group 2 horses raced and earned money after surgery. All Group 1 horses that raced performed at a level lower than the national average. Only 1 Group 2 horse had an improved PI score postoperatively.
Conclusions:
Thoroughbred racehorses have a fair prognosis for racing successfully after partial arytenoidectomy without mucosal closure.
Clinical Relevance:
This technique may be a practical alternative to primary mucosal closure, would decrease surgical time, and avoid some problems reported with primary mucosal closure.
