新型预制接骨板用于下颌骨骨折复位与固定的适配性分析
Analyzing the Fitting of Novel Preformed Osteosynthesis Plates for the Reduction and Fixation of Mandibular Fractures.
作者信息
Fuessinger Marc Anton, Gass Mathieu, Woelm Caroline, Cornelius Carl-Peter, Zimmerer Ruediger M, Poxleitner Philipp, Schlager Stefan, Metzger Marc Christian
机构信息
Department of Oral and Maxillofacial Surgery, University Freiburg Hugstetterstr, 55, 79106 Freiburg, Germany.
Department of Oral and Maxillofacial Surgery, University Munich Lindwurmstr, 2a, 80137 Munich, Germany.
出版信息
J Clin Med. 2021 Dec 20;10(24):5975. doi: 10.3390/jcm10245975.
PURPOSE
The known preformed osteosynthesis plates for the midface are helpful tools for a precise and fast fixation of repositioned fractures. The purpose of the current study is to analyze the precision of newly developed prototypes of preformed osteosynthesis plates for the mandible.
METHODS
Four newly designed preformed osteosynthesis plates, generated by a statistical shape model based on 115 CT scans, were virtually analyzed. The used plates were designed for symphyseal, parasymphyseal, angle, and condyle fractures. Each type of plate has three different sizes. For analysis, the shortest distance between the plate and the bone surface was measured, and the sum of the plate-to-bone distances over the whole surface was calculated.
RESULTS
A distance between plate and bone of less than 1.5 mm was defined as sufficient fitting. The plate for symphyseal fractures showed good fitting in 90% of the cases for size M, and in 84% for size L. For parasymphyseal fractures, size S fits in 80%, size M in 68%, and size L in 65% of the cases. Angle fractures with their specific plate show good fitting for size S in 53%, size M in 60%, and size L in 47%. The preformed plate for the condyle part fits for size S in 75%, for size M in 85%, and for size L in 74% of the cases.
CONCLUSION
The newly developed mandible plates show sufficient clinical fitting to ensure adequate fracture reduction and fixation.
目的
已知的用于面中部的预制接骨板是精确快速固定复位骨折的有用工具。本研究的目的是分析新开发的下颌骨预制接骨板原型的精度。
方法
对基于115例CT扫描通过统计形状模型生成的四种新设计的预制接骨板进行了虚拟分析。所使用的接骨板设计用于下颌骨联合、下颌骨旁联合、角部和髁突骨折。每种接骨板有三种不同尺寸。为进行分析，测量接骨板与骨表面之间的最短距离，并计算整个表面上接骨板到骨的距离总和。
结果
接骨板与骨之间的距离小于1.5mm被定义为拟合良好。下颌骨联合骨折接骨板在M尺寸的病例中有90%拟合良好，在L尺寸的病例中有84%拟合良好。对于下颌骨旁联合骨折，S尺寸在80%的病例中拟合良好，M尺寸在68%的病例中拟合良好，L尺寸在65%的病例中拟合良好。角部骨折的专用接骨板在S尺寸的病例中有53%拟合良好，M尺寸在60%的病例中拟合良好，L尺寸在47%的病例中拟合良好。髁突部分的预制接骨板在S尺寸的病例中有75%拟合良好，M尺寸在85%的病例中拟合良好，L尺寸在74%的病例中拟合良好。
结论
新开发的下颌骨接骨板显示出足够的临床拟合度，以确保充分的骨折复位和固定。
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