Kangzhe Wang, Yuming Li, Chunchao Xia, Bing Shi, Chenghao Li
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引用次数: 0
Abstract
Objectives: This study aims to obtain a three-dimensional reconstruction model based on magnetic resonance imaging (MRI) data of patients with different degrees of unilateral cleft lip and analyze the anatomy and changes in multiple groups of nasolabial muscles under dynamic and static conditions.
Methods: One normal person and four adult patients with unilateral cleft lip were included, and MRI was performed under static (upper and lower lips closed naturally) and dynamic (pout and grin) conditions. 3D Slicer software was used to reconstruct the model and draw the anatomic morphology of nasolabial muscles. The distance between the junction (where the muscle merges into the orbicularis oris) of the levator muscle, zygomaticminor muscle, and zygomatic major muscle to the median sagittal plane, the starting point to the junction point, the dynamic and static junction points, and the angle between the connection of dynamic and static junctions and the horizontal plane were measured under three kinds of movements, and the ratio was calculated.
Results: In all patients, under dynamic and static conditions, the distance from the muscle junction to the median sagittal plane, their ratios of the cleft side to the non-cleft side were all greater than 1. While the ratio of the distance from the starting point of the muscle to the junction point is less than 1. At static conditions, the two ratios of the same muscle increased gradiently with the severity of the cleft, and the ratio of the zygomatic minor muscle was prominent in the same patient. The ratio of the cleft side to the non-cleft side was greater than 1, and the value for comparison was the angle of the line from the static to the dynamic junction and the horizontal plane.
Conclusions: The symmetry of the insertion site of the orbicularis oris and the linear distance of both sides of the muscle are related to muscle and cleft types. The angle of muscle contraction on the cleft side is greater than that on the non-cleft side.
研究目的本研究旨在根据不同程度的单侧唇裂患者的磁共振成像(MRI)数据获得三维重建模型,并分析动态和静态条件下多组鼻唇肌的解剖结构和变化:方法:纳入一名正常人和四名成年单侧唇裂患者,在静态(上下唇自然闭合)和动态(噘嘴和咧嘴)条件下进行核磁共振成像。使用 3D Slicer 软件重建模型并绘制鼻唇肌的解剖形态。在三种运动状态下测量提上睑肌、颧小肌和颧大肌的交界处(肌肉与口轮匝肌合并的位置)到矢状面中线的距离、起点到交界点的距离、动态和静态交界点的距离、动态和静态交界点连接处与水平面的夹角,并计算比值:所有患者在动态和静态条件下,肌肉交界点到矢状面中线的距离、裂侧与非裂侧的比值均大于1,而肌肉起点到交界点的距离的比值小于1;在静态条件下,同一肌肉的两个比值随裂的严重程度而逐渐增大,同一患者颧小肌的比值突出。裂侧与非裂侧的比值大于 1,比较值为静态与动态交界处的连线与水平面的夹角:结论:眼轮匝肌插入部位的对称性和两侧肌肉的线性距离与肌肉和眼裂类型有关。裂隙侧的肌肉收缩角度大于非裂隙侧。