0530 - the Effect of Bone Cavity Preparation Method on Implant Fixation

Introduction: Compaction of bone to create a cavity for a total joint implant is gaining recognition as a bone-saving alternative to methods of cavity preparation that involve only extraction of bone. Advantages of compaction are increased contact area at the implant-bone interface and subsequent improved initial fixation and potential for bone ingrowth. Rasping and drilling are bone extraction techniques, while bone compaction is a bonesaving method of creating a cavity. Previous published work (1) has shown that bone compaction can enhance the initial stability of intramedullary implants. This study was designed to evaluate the influence of bone cavity preparation technique on the fixation of hydroxyapatite-coated metallic implants in an animal model.