Abstract：
To determine the skeletal changes after midface surgery in patients with syndromic craniosynostosis who underwent Le Fort III (LFIII), monobloc (MB), or facial bipartition (FB). This was a retrospective study including 75 patients: 33 treated by LFIII, 29 by MB, and 13 by FB. Twenty-five had a diagnosis of Apert, 39 Crouzon, and 11 craniofrontonasal syndrome. A three-dimensional mesh was created from the preoperative scan and registered to the postoperative scan to visualise the advancement. LFIII at age 7-12 years effectuated a higher mean advancement in the maxillary (15.5 mm) and zygomatic (7.6 mm) regions when compared to ≥13 years (10.2 mm and 5.5 mm). After MB, mean advancement of the fronto-orbital region was higher at <7 years (16.4 mm), and similarly lower at ages 7-12 (13.8 mm) and ≥13 (12.5 mm). The mean preoperative inter-dacryon distance (34.4 ± 4.4 mm) was reduced by 8.7 ± 4.2 mm after FB without distraction (n = 10). More advancement was seen when midface surgery was performed at a younger age, due to more severe cases and a desire for overcorrection. The highest mean advancement was observed in the fronto-orbital region. Antero-inferior rotational movement was seen after all three techniques.
摘要：
为了确定接受LeFortIII（LFIII）的综合征性颅骨融合症患者的中面部手术后的骨骼变化，单块(MB),或面部二分区（FB）。这是一项回顾性研究，包括75例患者：33例接受LFII治疗，29MB13由FB25人被诊断为Apert,39克劳松，和11个颅鼻额综合征.从术前扫描创建三维网格并配准到术后扫描以可视化进展。与≥13岁（10.2毫米和5.5毫米）相比，7-12岁的LFII在上颌（15.5毫米）和zy骨（7.6毫米）区域实现了更高的平均前进。MB之后,前眶区域的平均进展在<7年（16.4毫米）时更高，在7-12岁(13.8毫米)和≥13岁(12.5毫米)时同样较低。前平均dacryon间距（34.4±4.4mm）在不分散注意力的情况下减少了8.7±4.2mm（n=10）。当年轻时进行中脸手术时，可以看到更多的进步，由于更严重的病例和过度矫正的愿望。在前眶区域观察到最高的平均前进。在所有三种技术之后，都可以看到上下旋转运动。
