3-dimensional position changes of periorbital structures after midface distraction osteogenesis

• Published in: Zhonghua zheng xing wai ke za zhi = Zhonghua zhengxing waike zazhi = Chinese journal of plastic surgery Vol. 24; no. 6; p. 421
• Main Authors: Yu, Zhe-Yuan, Mu, Xiong-Zheng, Han, Jia-Yi
• Format: Journal Article
• Language: Chinese
• Published: China 01.11.2008
• Subjects: Adolescent; Child; Facial Bones - diagnostic imaging; Facial Bones - surgery; Female; Humans; Imaging, Three-Dimensional; Male; Orbit - diagnostic imaging; Osteogenesis, Distraction - methods; Osteotomy, Le Fort - methods; Tomography, X-Ray Computed
• ISSN: 1009-4598

To evaluate the 3-D position changes of periorbital structures after midface distraction osteogenesis in patients with Crouzon syndrome. The CT data of 8 cases who had accepted the midface distraction osteogenesis following Le Fort III osteotomy were retrospectively analyzed. The patients were averagely 11.9 years old, and the CT was performed before and one year after operation. After 3-D image reconstruction, a right-hand coordinate system based on the preoperational Frankfurt Plane was then established. The pre- and post-operative positions of the superior orbit point (SOr), inferior orbit point (IOr), median orbit point (MOr), lateral orbit point (LOr), anterior ocularis point (AO), ocularis eyeball point (PO) and the four insertion ocularis rectus were documented and compared. The positions of these marked points in normal controls were also documented and compared with those in patients. After midface distraction osteogenesis, the position of AO was not changed significantly on the y-axis and z-axis, bu