Affiliation:
1. Department of Small Animal Clinical Sciences College of Veterinary Medicine, University of Florida Gainesville Florida USA
2. Department of Small Animal Surgery College of Veterinary Medicine, University of Zurich Zurich Switzerland
Abstract
AbstractObjectiveTo describe the complications and outcomes in dogs with luxoid hip dysplasia (LH) undergoing total hip arthroplasty (THA) and compare complication rates with THA in non‐LH dogs.Study designRetrospective study.Sample populationClient‐owned dogs (n = 217) undergoing primary THA (n = 238).MethodsMedical records (2010–2022) of dogs undergoing THA were reviewed, and LH was defined as complete dorsal displacement of the femoral head from the acetabulum on lateral projection radiographs. Major or catastrophic complications, revisions, and outcomes were recorded for all dogs and they were compared between LH and non‐LH groups.ResultsEighteen cases met the subcriterion for the LH group and 220 cases met the subcriterion for inclusion in the non‐LH group. There were 14 complications in 13/18 dogs with LH; seven were intraoperative (femoral fissure/fracture) and seven were postoperative (dorsal luxation, n = 5; femoral fracture, n = 1; acetabular cup septic loosening, n = 1). Revisions were performed for all LH dogs that encountered complications; satisfactory outcomes were achieved in 12/13 dogs. Overall, LH dogs had a higher risk of developing complications (p < .001), including intraoperative fracture (p < .001) and postoperative dorsal luxation (p = .019) when compared with non‐LH dogs.ConclusionLuxoid hip dysplasia was associated with a higher risk of major complications following THA in dogs, specifically intraoperative fissure/fracture and postoperative dorsal luxation. Despite the increased risk, revisions typically yielded satisfactory outcomes.Clinical significanceLuxoid hip dysplasia is an important risk factor for the development of major complications in dogs undergoing THA.