An anatomic plate provides successful outcomes for stabilization of periprosthetic femoral fractures and greater trochanteric osteotomies in dogs undergoing total hip replacement

Objective: To report the clinical and radiographic outcomes of a locking proximal femoral anatomic bone plate in the management of periprosthetic femoral fractures (PFFs) and greater trochanteric osteotomies (GTOs) in dogs undergoing total hip replacement (THR). Animals: Medical records from August 2023 to February 2026 were reviewed for dogs with THR that developed PFF or underwent planned GTO and were subsequently stabilized with a locking proximal femoral anatomic bone plate. Cases involving a second plate, preexisting surgical site infection, or THR implant removal at the time of surgery were excluded. Eleven dogs were included-8 with PFF and 3 with GTO. Clinical Presentation: The median age of dogs that sustained a femoral fracture was 7.5 years (range, 2 to 12.5 years). Three fractures occurred intraoperatively, and 5 occurred < 30 days postoperatively. The median age of dogs that underwent GTO was 2 years (range, 1 to 9 years). Of the 3 cases, 1 was a revision of a previously failed pin and tension-band repair of a GTO, and the other 2 were the primary repairs of the GTO. Results: Radiographic bone healing and full function were achieved in all PFF cases. Two cases of GTO completely healed, and 1 was a delayed union but stable at12 weeks; all achieved full or acceptable function. One major complication occurred in the PFF group and was successfully revised with a larger plate. Clinical Relevance: A locking proximal femoral anatomic bone plate provided adequate fixation and successful outcomes in dogs with PFF or elective GTO in dogs undergoing total hip replacement.