Facial musculoskeletal asymmetry in hemifacial microsomia.

The Cleft palate journal Pub Date : 1989-10-01
J L Marsh, D Baca, M W Vannier
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Abstract

Computer-assisted medical imaging--transaxial computed tomography (CT) scans and three-dimensional surface reconstructions--was used to study the muscles of mastication and their osseous origins and insertions in 24 patients with untreated unilateral hemifacial microsomia (HFM). The relationship between the volume of a muscle of mastication and the shape and size of its origin and insertion in such patients varies widely. Comparison of mean volumes of specific muscles documents a statistically significant decrease among patients who have moderate to marked mandibular dysmorphology as compared with those with minimally dysmorphic mandibles. This study supports the hypothesis that the shape and size of the mandible are related to the muscles that originate and insert upon it. However, the variation among individual patients means that assumptions regarding muscle mass and, in turn, function cannot be made regarding an individual patient on the basis of osseous dysmorphology that has been demonstrated on skull radiographs alone.

面肌-骨骼不对称在半面肌短症。
采用计算机辅助医学成像——经轴计算机断层扫描(CT)和三维表面重建——研究了24例未经治疗的单侧半面小畸形(HFM)患者的咀嚼肌肉及其骨起源和插入。在这类患者中,咀嚼肌的体积与其起止部位的形状和大小之间的关系差别很大。比较特定肌肉的平均体积,在中度到明显的下颌畸形患者中,与轻度下颌畸形患者相比,有统计学意义的显著减少。这项研究支持了一个假设,即下颌骨的形状和大小与下颌骨上的肌肉有关。然而,个体患者之间的差异意味着不能根据仅在颅骨x线片上显示的骨骼畸形对个体患者做出有关肌肉质量和功能的假设。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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