Double pelvic osteotomy for the treatment of hip dysplasia in dogs

FOR THE TREATMENT OF HIP DYSPLASIA IN DOGS Dr. John Punke Dr. Tony Mann, Thesis Supervisor ABSTRACT Canine hip dysplasia (CHD) is the most common developmental orthopedic disease of dogs. Triple pelvic osteotomy (TPO) is a surgery that can be performed at 5 months of age, prior to the development of osteoarthritis. Complication rates of 33-50% have been reported for TPO and have spurned interest in a newer technique, double pelvic osteotomy (DPO). The purpose of this thesis is to review the veterinary literature about CHD, surgical treatment options for CHD, and pelvic osteotomy in particular, and to describe two studies, an in vitro study and a retrospective clinical study comparing complication rates of TPO and DPO. We conducted an anatomic study of the effects of DPO on the anatomy of the juvenile canine pelvis. Axial rotation of the acetabulum was performed by DPO of 20 o , 25 o , and 30 o and evaluated with computed tomography in an effort to evaluate which plate size most closely resembled a 20 o TPO as previously recommended. The data from this study suggest that a 25 o