This report describes the feasibility of posterior-superior repositioning of the maxilla by Le Fort Ⅰ osteotomy with a pterygoid process fracture, while preserving the descending palatine artery. We examined movement accuracy and stability in 3 patients in whom maxillary protrusion with vertical maxillary excess was treated by moving the maxilla backward more than 4 mm. The postsurgical positions of the maxilla were more posterior than the presurgical expectations, but the differences were within 1 mm. Cephalometric analysis revealed that the differences in each measurement between immediately and one year after surgery were within 1 degree. Without mandibular osteotomy, maxillary protrusion can be satisfactorily treated with Le Fort Ⅰ osteotomy alone.
