title: Treatment of humeroulnar subluxation with a dynamic proximal ulnar osteotomy. A review of 13 cases.
abstract: Humeroulnar subluxation was treated surgically in 13 dogs with 18 affected elbows using a proximal osteotomy of the ulna that allowed the ulna to elongate dynamically. Distal humeroulnar subluxation was secondary to premature closure of the distal ulnar physis in 16 elbows. One distal subluxation was secondary to a radioulnar synostosis, and one proximal subluxation developed after premature closure of the distal radial physis. The mean follow-up time was 22 months. Twenty-eight percent of the elbows were judged to have excellent results, 22% good results, 50% fair results, and none was judged to have a poor outcome. The presenting lameness grade and the severity of preoperative and postoperative humeroulnar subluxation had significant correlations with the prognosis. Associated orthopedic abnormalities and complications of concurrent surgical procedures affected the outcome in several dogs. Overall, the dynamic proximal ulnar osteotomy was a simple and effective technique for the treatment of uncomplicated humeroulnar subluxation.
authors.affiliation: Department of Clinical Sciences, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins.
authors.forename: S D
authors.initials: SD
authors.lastname: Gilson
authors.forename: D L
authors.initials: DL
authors.lastname: Piermattei
authors.forename: P D
authors.initials: PD
authors.lastname: Schwarz
mesh_terms: D000818:Animals; D004283:Dog Diseases / Q000601:surgery*; D004285:Dogs; D005260:Female; D005552:Forelimb; D004204:Joint Dislocations / Q000000981:diagnostic imaging / Q000601:surgery / Q000662:veterinary*; D007794:Lameness, Animal / Q000601:surgery; D008297:Male; D010027:Osteotomy / Q000662:veterinary*; D011859:Radiography; D014457:Ulna / Q000601:surgery*