Department of Oral and Maxillofacial Surgery, Erasmus University Medical Center Rotterdam, Netherlands.
J Craniomaxillofac Surg. 2013 Oct;41(7):e146-53. doi: 10.1016/j.jcms.2012.12.002. Epub 2013 Jan 24.
The monobloc advancement with distraction is a treatment modality for syndromic craniosynostosis, to correct exorbitism, upper airway compromise and malocclusion. In this report orbital volume and movements of (peri-)orbital structures and globes of seven patients following monobloc distraction are evaluated. In preoperative and postoperative CT-scans orbital volume was assessed and a 3D coordinate system with eleven landmarks was used to measure the movements of orbital structures and globes and to measure the change of exorbitism. Correlation between orbital volume, movements of the orbital structures and change in exorbitism was studied. The orbital volume increased by 49.9% (left) and 50.4% (right). The average anterior movement of the bone was 13.6 mm (left) and 13.9 mm (right). The mean anterior movement of the left globe was 5.8 mm and of the right globe 5.3 mm. The ratio of globe/bone movement was 0.4. Exorbitism decreased with 7.8 mm (left) and 8.1 mm (right). Differences between left and right for orbital volume, for movements and for the decrease in exorbitism were not significant. Volume enlargement and decrease in exorbitism were correlated (p ≤ 0.05). Following monobloc advancement orbital volume increases, (peri-)orbital structures and the globe move forward and exorbitism diminishes.
整体骨瓣推进牵张术是一种治疗综合征性颅缝早闭的方法，可矫正眼球突出、上呼吸道阻塞和咬合不正。本报告评估了 7 例整体骨瓣牵张术后眶容积和（眶周）结构及眼球运动。在术前和术后 CT 扫描中评估了眶容积，并使用 11 个标志点的三维坐标系来测量眶周结构和眼球的运动，并测量眼球突出度的变化。研究了眶容积、眶周结构运动与眼球突出度变化之间的相关性。眶容积增加了 49.9%（左侧）和 50.4%（右侧）。骨的平均前向运动为 13.6mm（左侧）和 13.9mm（右侧）。左眼球的平均前向运动为 5.8mm，右眼球为 5.3mm。眼球/骨运动的比值为 0.4。眼球突出度分别减少了 7.8mm（左侧）和 8.1mm（右侧）。左侧和右侧的眶容积、运动和眼球突出度减少之间没有显著差异。眶容积增大与眼球突出度减少呈相关关系（p≤0.05）。整体骨瓣推进术后，眶容积增加，（眶周）结构和眼球向前移动，眼球突出度减轻。
