Accuracy of a new custom-made bone-supported osteotomy and repositioning guide system for reconstruction of the mandibular ramus using costochondral grafts: a preliminary study

Accuracy of a new custom-made bone-supported osteotomy and repositioning guide system for reconstruction of the mandibular ramus using costochondral grafts: a preliminary study: Mandibular reconstruction in patients with hemifacial microsomia is still challenging. In this study we have introduced a costochondral graft (CCG) for reconstruction of the mandibular ramus, and reported a bone-supported osteotomy and repositioning guide system for transfer of a virtual plan. Fourteen young children with Pruzansky type III hemifacial microsomia were included and treated with CCG to reconstruct the ramus. We first made 3-dimensional models for virtual planning and simulation, with calculations for both the position and direction of the CCG, to achieve optimal morphology.