From 1990 till 2000 thirty windsucking horses were admitted for surgical intervention at the department of Surgery and Anesthesiology of Domestic Animals of the Faculty of Veterinary Medicine in Ghent. Twenty-one horse owners answered the follow-up questionary. The etiology of this stereotypy and possible treatments are discussed. The results after surgery (modified operation of Forssell) were good in 71.4% of the cases, with little postoperative complications. There was no predisposition for a certain age or sex although thoroughbreds were more often referred for surgical treatment