Using Three-Dimensional Computer Tomography Reconstruction and Distraction Osteogenesis Techniques for Personalized Correction on Hemifacial Microsomia

Objective To explore a technique for a personalized treatment of hemifacial microsomia by using three-dimensional computer tomography reconstruction and distraction osteogenesis techniques.Methods According to the measurement and analysis of the preoperative X ray cephalometric radiographs and three-dimensional computer tomography reconstructive data of the 8 patients with hemifacial microsomia,personalized surgical schemes were made.Through an external oral approach,the mandible was lengthened,and the mandible deformity of the hemifacial microsomia was corrected by surgery.Results All patients achieved satisfactory results of mandibular lengthening,the range of distraction distance extends from 18 mm to 25 mm.The facial asymmetry deformities were improved obviously.Conclusion Three-dimensional computer tomography reconstruction and distraction osteogenesis techniques are very suitable for the treatment of hemifacial microsomia.