上颌骨骨折后若处理不当,常会造成错(?)畸形,且引起咀嚼、发音困难等后遗症。以往对此类情况因不易复位而放弃手术治疗。近几年来,我们采用勒福尔(Lefort)I 型截骨法治疗6例,使错位的上颌骨整复为正常的咬(?)关系,取得了较为满意的效果。病例简介例1:王某,男,21岁。1975年4月被矿车挤压伤,致下颌骨右侧髁状突骨折,曾在局麻下行髁状突截除。1976年5月8日以上下颌骨陈旧性骨 Improper handling of maxillary fractures can often lead to malformations (?) Deformities and can cause complications such as mastication and dysarthria. In the past for such cases due to difficult to reset and give up surgery. In recent years, we use Lefort type I osteotomy treatment of 6 cases, so that dislocation of the maxilla to normal bite (?) Relationship, and achieved satisfactory results. Case Description Example 1: Wang, male, 21 years old. April 1975 by the car crush injury, caused by the right mandibular condyle fracture, had undergone condylar cut off. May 8, 1976 above the mandible old bone