Retrospective Analysis Of Periprosthetic Fracture After Total Hip Replacement

Objective: To evaluate the mechanisms, treatments and therapeutic effects of periprosthetic fracture by the analysis of 14 patients, and to offer some advices for the treatments of periprosthetic fracture.Methods: From 1999-2005, 14 periprosthetic fractures of hip were treated in our department. According to the classification system of Vancouver, there were three type A₁ fractures, two type A₂ fractures, four type B₁ fractures, five type B₃ fractures. Five patients were managed with revision to a longstem prosthesis. Eight patients with periprosthetic fractures of hip underwent cortical bone plates allografts by deep-freezing at -70℃, three patients only packed with iron and the other three had no special treatment. To evaluate clinical outcome by Harris scores, and X-ray photographs. Results: There weren't activity of immunity rejection and infection in all patients. Harris scores of patients increased apparently after surgery. X-ray films indicated that fracture was healed at 3 months and there was partially bone conjunction between allograft strut and host bone. There was incorporation of 74% allograft strut to host bone and 13% allograft strut was partically absorbed at 12 monthes after surgery. The size of femur of host was added from 3mm to 5mm, averaged 4.27mm at 12 months postoperation.