1A1-A02 A spherical bone cutting device for Rotational Acetabular Osteotomy

Abstract

We have developed a bone cutting device to conduct precise spherical bone cutting, which is necessary procedure in Rotational Acetabular Osteotomy(RAO). In this study, we conducted a spherical bone cutting on two porcine pelvises and evaluated its clinical usefulness from resultants. Maximum temperature with water-irrigation of 10ml/min fluid was lower than 40 degrees which is enough to avoid heat-induced necrosis during the cutting procedure. The resected width, 2-2.2mm, is also suitable for the bone regeneration. And we showed that intended cutting was performed by measuring 3-dimensional surface position of the cut porcine pelvises. We will apply the navigation systems to conduct more precise bone cutting as the next stage and we are sure it will be able to assist RAO in the near future.