对基于 RSA 的新型撞击度量进行模型验证,以评估组件间撞击风险。

IF 1.7 4区 医学 Q3 ENGINEERING, BIOMEDICAL
Shahnaz Taleb, Jordan S Broberg, Brent A Lanting, Matthew G Teeter
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引用次数: 0

摘要

全髋关节置换术中的组件对组件撞击可能导致包括脱位在内的术后并发症。尽管有许多临床研究致力于降低这种风险,但评估方法仍局限于定性放射摄影、有限元分析和尸体研究。在研究环境中需要对撞击进行更精确的测量。我们旨在验证一种基于 RSA 的新型撞击度量方法,以测量体内部件间的撞击。我们对标准的聚乙烯金属全髋关节系统进行了模型实验。RSA检查是按照传统的大关节负重RSA检查的典型方法进行的。模型被放置在 10 个可能的冲击位置和一个中立位置。为测量可重复性拍摄了两次曝光X光片。测量头部裙部与髋臼杯衬垫内周之间的最近距离,以评估撞击风险。在10个撞击位置中,头罩最近点与髋臼杯边缘之间的距离从0.05到1.03毫米不等,平均为0.67毫米。在中立位置,测得的距离为 11.02 毫米。重复性极佳,标准偏差为 0.03 毫米,r 值为 0.09。建立了一个经过验证的基于 RSA 的风险度量标准,用于评估体内髋关节撞击。可建议以 1 毫米为阈值来定义撞击,距离接近 1.00 毫米时发生撞击的风险更大。这一简化指标为即将开展的部件间撞击临床研究带来了希望。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Phantom validation of a novel RSA-based impingement metric to assess component-on-component impingement risk.

Component-on-component impingement in total hip arthroplasty may lead to post-operative complications including dislocation. Despite numerous clinical studies focusing on reducing this risk, assessment methods remain limited to qualitative radiography, finite element analysis, and cadaver studies. There is a need for more precise measurements of impingement in the research setting. We aimed to validate a novel RSA-based impingement metric to measure component-on-component impingement in vivo. A phantom experiment of a standard metal-on-polyethylene total hip system was performed. RSA examinations were performed as typical for a traditional weight-bearing RSA exam for large joints. The phantom was placed in 10 possible impinged positions and one neutral position. Double exposure radiographs were taken to measure repeatability. The closest distance between the skirt of the head and the inner circumference of the acetabular cup liner was measured to assess impingement risk. Distances between the closest point of the hood to the edge of the cup in 10 impinged positions ranged from 0.05 to 1.03 mm, with the average being 0.67 mm. In the neutral position, the distance measured is 11.02 mm. Excellent repeatability was observed, with a standard deviation of 0.03 mm with an r value of 0.09. A validated RSA-based risk metric was established to evaluate in vivo hip impingement. A 1 mm threshold may be proposed to define impingement where distances approaching 1.00 mm are at a greater risk of impingement. This simplified metric holds promise for upcoming clinical studies on component-on-component impingement.

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来源期刊
CiteScore
3.60
自引率
5.60%
发文量
122
审稿时长
6 months
期刊介绍: The Journal of Engineering in Medicine is an interdisciplinary journal encompassing all aspects of engineering in medicine. The Journal is a vital tool for maintaining an understanding of the newest techniques and research in medical engineering.
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