摘要
目的 通过建立颧骨复合体三维有限元模型,对不同截骨方式进行力学分析及评价,旨在提供颧骨复合体缩小手术的力学研究基础.方法 选取临床中颧骨复合体高突的患者,应用Mimics软件将颧骨复合体高突患者的面部CT图像进行三维重建,使用MSC.Marc软件进行网格划分,建立三维有限元模型,并通过解剖学研究和测量,结合图像,确立咬肌附着部位的面积和肌力线方向,建立咬肌牵动的颧骨复合体三维有限元模型,并对颧骨复合体在基础状态与不同截骨方式下,进行咬肌牵动状态和咬（牙合）压力状态的基础力学分析.结果 在不同截骨方式下,通过咬肌牵拉和咬（牙合）压力作用,＂L＂型截骨方式的应力略弱于斜形截骨,位移应变两者差异无明显的统计学意义,颧弓根游离后端应力最大.结论 颧弓根截骨处应力最大,易移位,提示后端游离的截骨方式需要进一步改进.＂L＂型截骨是较为先进的一种截骨方式,但仍需进行基础性研究及长期的临床观察和评价.
Objective To explore a safe and effective ostoetomy for zygomatic complex reduction with 3D finite model analysis. Methods On the base of typical patient＇s CT images, three dimensional finite dim model of protrusion zygomatic complex with masseter muscle was established which was meshed by MSC. Mare software and grounded on the applied anatomic results. Then, the biomechanical characters among the L- shaped, oblique osteomy and natural status were observed in the conditions of masseter pulling and biting. Results Under the different kinds of osteotomies, L-shaped osteotomy had little less stress force than oblique type did with pressure of masseterie pulling and odontoprisis, the biggest stress was located in the zygomatic root. There was no obvious statistical significance in the displacement. Conclusion Zygomatie root tends to displace for the bigges stresswas located in it with possibility of modification. L-shaped osteotomy is better than oblique type. Additional basic research studies and long-term clinical observations are needed.
出处
《中国美容整形外科杂志》
CAS
2010年第5期277-280,共4页
Chinese Journal of Aesthetic and Plastic Surgery
基金
广东省医学科研基金资助项目（A2008424）
关键词
颧骨复合体缩小术
三维有限元
截骨
生物力学
Zygomatic complex reduction
Three dimensional finite element
Osteotomy
Biomechanics
