USER DEFINED GEOMETRIC FEATURE FOR THE CREATION OF THE FEMORAL NECK ENVELOPING SURFACE

IF 10.1 2区工程技术 Q1 ENGINEERING, MECHANICAL

Facta Universitatis-Series Mechanical Engineering Pub Date : 2022-04-08 DOI:10.22190/fume200220034s

M. Stojković, M. Trifunovic, J. Milovanovic, S. Arsic

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引用次数: 0

Abstract

There is a growing demand for application of personalized bone implants (endoprostheses or macro-scaffolds, and fixators) which conform the anatomy of patient. Hence the need for a CAD procedure that enables fast and sufficiently accurate digital reconstruction of the traumatized bone geometry. Research presented in this paper addresses digital reconstruction of the femoral neck fracture. The results point out that User-Defined (geometric) Feature (UDF) concept is the most convenient to use in digital reconstruction of numerous variants of the same topology, such as in this kind of bone region. UDF, named FemoNeck, is developed to demonstrate capability of the chosen concept. Its geometry, controlled by a dozen of parameters, can be easily shaped according to anatomy of femoral neck region of the specific patient. That kind of CAD procedure should use minimally required set of geometric (anatomical) parameters, which can be easily captured from X-ray or Computed Tomography (CT) images. For the statistical analysis of geometry and UDF development we used CT scans of proximal femur of 24 Caucasian female and male adults. The validation of the proposed method was done by applying it for remodeling four femoral necks of four different proximal femurs and by comparing the geometrical congruency between the raw polygonal models gained directly from CT scan and reconstructed models.

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用户定义的几何特征，用于创建股骨颈包络面

对符合患者解剖结构的个性化骨植入物(内假体或宏观支架和固定物)的应用需求日益增长。因此，需要一种CAD程序，能够快速和足够准确地重建创伤骨的几何形状。本文介绍了股骨颈骨折的数字重建。结果表明，用户自定义(几何)特征(UDF)概念最方便用于相同拓扑的众多变体的数字重建，例如在这种骨区域。开发名为FemoNeck的UDF是为了演示所选概念的能力。它的几何形状由十几个参数控制，可以根据特定患者股骨颈区域的解剖结构轻松塑造。这种CAD程序应该使用最小要求的几何(解剖)参数集，这些参数可以很容易地从x射线或计算机断层扫描(CT)图像中捕获。为了统计分析几何和UDF发展，我们使用了24名成年白人女性和男性近端股骨的CT扫描。通过将该方法应用于4个不同股骨近端股骨颈的重建，并通过比较直接从CT扫描获得的原始多边形模型与重建模型的几何一致性来验证该方法的有效性。

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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来源期刊

Facta Universitatis-Series Mechanical Engineering ENGINEERING, MECHANICAL-

CiteScore

14.40

自引率

2.50%

发文量

审稿时长

6 weeks

期刊介绍： Facta Universitatis, Series: Mechanical Engineering (FU Mech Eng) is an open-access, peer-reviewed international journal published by the University of Niš in the Republic of Serbia. It publishes high-quality, refereed papers three times a year, encompassing original theoretical and/or practice-oriented research as well as extended versions of previously published conference papers. The journal's scope covers the entire spectrum of Mechanical Engineering. Papers undergo rigorous peer review to ensure originality, relevance, and readability, maintaining high publication standards while offering a timely, comprehensive, and balanced review process.