Chatdokmaiprai Chalermpong, Kiranantawat Kidakorn, Lertsithichai Panuwat, Taeshineetanakul Patamintita
Department of Surgery.
Department of Radiology, Ramathibodi Hospital, Mahidol University, Bangkok, Thailand.
J Craniofac Surg. 2018 Oct;29(7):1939-1944. doi: 10.1097/SCS.0000000000005050.
The incidence of the patients with craniofacial anomalies was high in southeast-Asian countries, for example, fronto-ethmoidal encephalo-menigocele or craniosynostosis. These craniofacial anomalies usually involve orbits, so a surgical orbital reconstruction is always required.Various methods have been used in the past to indirectly analyze the craniofacial region. Plain skull radiography, anthropometry, and cephalometry provided the limited information of interorbital distance in terms of accuracy whereas the interorbital distance is crucial to be reconstructed, increasing or decreasing. The accurate normal interorbital distance which grows by age as other craniofacial structures is the important data in the part of interorbital and orbital reconstruction. To date, the normative data of the bony interorbital distance among Thai population have not been established.The purpose of this study is to provide normal values and the growth patterns of the bony interorbital distances and other dimensions of the orbit according to age among Thai population through the axial computed tomography. Comparisons can then be made between normal values and those for an individual patient or those for a group of patients, for example, those with front-ethmoidal meningoencephalocele, Crouzon, or Treacher-Collins syndrome, or among values for individual patients at different time intervals.A retrospective study of computed tomography (CT) scan series of 698 normal orbits from 349 skeletally normal subjects (202 men and 147 women) was enrolled. The age range of the patients was 0 to 21 years (mean, 10.2 years; SD, 5.8 years). A series of 12 measurements were obtained from the CT scans of each subject. All CT images were obtained from patients who underwent CT of the facial bone, brain, and orbits at the Department of Radiology of 3 big hospital in Bangkok-Ramathibodi, Samitivej Srinakarin, and Bangkok hospital-since 2010 to 2015.The normal measurement values in the orbital region through the CT images, as the normal periorbital growth curve, will help improving diagnostic accuracy, staging of reconstruction, precision of corrective surgery, and follow-up of the Thai patients with craniofacial abnormalities such as front-ethmoidal meningoencephalocele, hypertelorism. These data may also apply to the related population in the southeast-Asian countries.
颅面畸形患者在东南亚国家的发病率较高，例如额筛部脑膨出或颅缝早闭。这些颅面畸形通常累及眼眶，因此总是需要进行眼眶重建手术。过去曾使用各种方法间接分析颅面部区域。普通颅骨X线摄影、人体测量学和头影测量学在眶间距离的准确性方面提供的信息有限，而眶间距离对于重建时增加或减少至关重要。准确的正常眶间距离会随着年龄增长，如同其他颅面结构一样，是眶间和眼眶重建部分的重要数据。迄今为止，泰国人群中骨眶间距离的标准数据尚未确立。本研究的目的是通过轴向计算机断层扫描提供泰国人群中骨眶间距离及眼眶其他维度根据年龄的正常值和生长模式。然后可以将正常值与个体患者或一组患者的值进行比较，例如患有额筛部脑膜脑膨出、克鲁宗综合征或特雷彻 - 柯林斯综合征的患者，或者在不同时间间隔的个体患者的值之间进行比较。对349名骨骼正常受试者（202名男性和147名女性）的698个正常眼眶的计算机断层扫描（CT）系列进行了回顾性研究。患者的年龄范围为0至21岁（平均10.2岁；标准差5.8岁）。从每个受试者的CT扫描中获得了一系列12项测量值。所有CT图像均来自2010年至2015年在曼谷拉玛蒂博迪、三美泰诗纳卡琳和曼谷医院这3家大型医院放射科接受面部骨骼、脑部和眼眶CT检查的患者。通过CT图像获得的眼眶区域正常测量值，作为正常眶周生长曲线，将有助于提高泰国颅面异常患者（如额筛部脑膜脑膨出、眶距增宽症）的诊断准确性、重建分期、矫正手术精度和随访。这些数据也可能适用于东南亚国家的相关人群。
