Accuracy of an image matching technique for assessing knee alignment during the stance phase of gait using single-plane anteroposterior radiography.

IF 1 4区医学 Q4 ENGINEERING, BIOMEDICAL

Bio-medical materials and engineering Pub Date : 2024-08-16 DOI:10.3233/BME-240059

Koichi Kobayashi, Makoto Sakamoto, Tatsuya Soeno, Takashi Sato

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引用次数: 0

Abstract

Background: Accurate measurement of bone alignment of the knee during walking provides ideal clinical information for diagnosis and treatment of knee joint disorders. To bring this ideal closer to clinical reality, we developed an image matching technique to measure the three-dimensional (3D) position of bones using anteroposterior radiography during the stance phase of treadmill walking.

Objective: To develop and validate an image matching method for evaluation of 3D knee alignment using anteroposterior radiography of artificial femoral and tibial bones.

Methods: The 3D position of each bone was recovered by minimizing the difference between the projected outline and the contour of the bone in the anteroposterior radiograph. The true value of the position was measured using a 3D coordinate measuring machine.

Results: The mean values ± standard deviation and root mean squares (RMS) of translation errors were within -1.6 ± 2.1 mm and 2.6 mm, respectively, for femur, and 2.1 ± 1.9 mm and 2.8 mm for tibia. The mean values ± standard deviation and RMS of errors in rotation were within 0.3 ± 0.7° and 0.7°, respectively, for femur, and -0.3 ± 0.9° and 0.9°, respectively, for tibia.

Conclusion: Our method is suitable for evaluating 3D knee alignment on anteroposterior radiography.

查看原文本刊更多论文

利用单平面正后方放射摄影评估步态阶段膝关节对齐情况的图像匹配技术的准确性。

背景：精确测量行走时膝关节的骨骼排列为膝关节疾病的诊断和治疗提供了理想的临床信息。为了使这一理想更接近临床现实，我们开发了一种图像匹配技术，在跑步机行走的站立阶段使用前胸X光片测量骨骼的三维（3D）位置：目的：开发并验证一种图像匹配方法，利用人工股骨和胫骨的前正位放射摄影评估膝关节的三维对齐情况：方法：通过最小化投影轮廓与前后位X光片中骨骼轮廓之间的差异来恢复每块骨骼的三维位置。使用三维坐标测量机测量位置的真实值：股骨平移误差的平均值（± 标准差）和均方根（RMS）分别在-1.6± 2.1 毫米和 2.6 毫米以内，胫骨平移误差的平均值（± 标准差）和均方根（RMS）分别在 2.1± 1.9 毫米和 2.8 毫米以内。股骨旋转误差的平均值（±标准偏差）和均方根误差分别在 0.3 ± 0.7° 和 0.7° 以内，胫骨旋转误差的平均值（±标准偏差）和均方根误差分别在 -0.3 ± 0.9° 和 0.9° 以内：结论：我们的方法适用于在前正位X光片上评估膝关节的三维对齐情况。

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

Bio-medical materials and engineering 工程技术-材料科学：生物材料

CiteScore

1.80

自引率

0.00%

发文量

审稿时长

6 months

期刊介绍： The aim of Bio-Medical Materials and Engineering is to promote the welfare of humans and to help them keep healthy. This international journal is an interdisciplinary journal that publishes original research papers, review articles and brief notes on materials and engineering for biological and medical systems. Articles in this peer-reviewed journal cover a wide range of topics, including, but not limited to: Engineering as applied to improving diagnosis, therapy, and prevention of disease and injury, and better substitutes for damaged or disabled human organs; Studies of biomaterial interactions with the human body, bio-compatibility, interfacial and interaction problems; Biomechanical behavior under biological and/or medical conditions; Mechanical and biological properties of membrane biomaterials; Cellular and tissue engineering, physiological, biophysical, biochemical bioengineering aspects; Implant failure fields and degradation of implants. Biomimetics engineering and materials including system analysis as supporter for aged people and as rehabilitation; Bioengineering and materials technology as applied to the decontamination against environmental problems; Biosensors, bioreactors, bioprocess instrumentation and control system; Application to food engineering; Standardization problems on biomaterials and related products; Assessment of reliability and safety of biomedical materials and man-machine systems; and Product liability of biomaterials and related products.