A medial malleolus marker provides precise measurements of tibial torsion that align closely with EOS

IF 1.4 3区医学 Q4 ENGINEERING, BIOMEDICAL

Clinical Biomechanics Pub Date : 2025-06-08 DOI:10.1016/j.clinbiomech.2025.106591

Patrick Do, Jing Feng, Ellen M. Raney

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引用次数: 0

Abstract

Background

Tibial malalignment often occurs in children with neurological and musculoskeletal disorders like cerebral palsy. Tibial torsion measurement, crucial for treatment decisions, is typically assessed using the conventional gait model, which places markers on the lateral shank, knee, and malleolus. However, accurately placing these markers can be challenging. Studies suggest adding a medial malleolus marker improves measurement accuracy. Additionally, EOS imaging provides a low-radiation, cost-effective method for measuring tibial rotation. This study aimed to evaluate the accuracy of the conventional gait model versus the medial malleoli marker method, compare these with passive goniometer measurements, and correlate results with EOS imaging.

Methods

In a cohort of 31 participants (aged 5–17 years), tibial torsion was assessed through physical exams, gait analysis, and EOS imaging. Tibial rotation was analyzed using the conventional model and medial malleoli marker method. Correlations between methods were assessed using Pearson's coefficient and Bland-Altman plots.

Findings

The medial malleoli marker method correlated more strongly with EOS imaging (r = 0.66) than the conventional model (r = 0.27). It also showed excellent agreement with passive goniometer measurements (r = 0.92). EOS imaging consistently reported higher torsion values compared to other methods.

Interpretation

Adding a medial malleolus marker enhances the accuracy and reliability of tibial rotation measurements compared to the conventional gait model. While discrepancies exist with EOS imaging, the medial malleoli marker method shows stronger alignment with both passive and imaging-based assessments.

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内踝标记提供了与EOS紧密一致的胫骨扭转的精确测量

背景胫骨错位常发生在神经和肌肉骨骼疾病如脑瘫的儿童中。胫骨扭转测量对治疗决策至关重要，通常使用传统的步态模型进行评估，该模型在外侧小腿，膝关节和内踝上放置标记。然而，准确地放置这些标记可能具有挑战性。研究表明，增加内踝标记可以提高测量的准确性。此外，EOS成像提供了一种低辐射、低成本的测量胫骨旋转的方法。本研究旨在评估传统步态模型与内侧踝部标记方法的准确性，将其与被动角计测量结果进行比较，并将结果与EOS成像相关联。方法选取31名年龄在5-17岁的参与者，通过体格检查、步态分析和EOS成像评估胫骨扭转。采用常规模型和内踝标记法分析胫骨旋转。使用Pearson系数和Bland-Altman图评估方法之间的相关性。结果：与常规模型（r = 0.27）相比，内侧踝部标记法与EOS成像的相关性更强（r = 0.66）。与被动测角仪的测量结果也非常吻合（r = 0.92）。与其他方法相比，EOS成像始终报告更高的扭转值。与传统的步态模型相比，添加内踝标记可提高胫骨旋转测量的准确性和可靠性。虽然与EOS成像存在差异，但内侧踝部标记法与被动和基于成像的评估都显示出更强的一致性。

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

Clinical Biomechanics 医学-工程：生物医学

CiteScore

3.30

自引率

5.60%

发文量

189

审稿时长

12.3 weeks

期刊介绍： Clinical Biomechanics is an international multidisciplinary journal of biomechanics with a focus on medical and clinical applications of new knowledge in the field. The science of biomechanics helps explain the causes of cell, tissue, organ and body system disorders, and supports clinicians in the diagnosis, prognosis and evaluation of treatment methods and technologies. Clinical Biomechanics aims to strengthen the links between laboratory and clinic by publishing cutting-edge biomechanics research which helps to explain the causes of injury and disease, and which provides evidence contributing to improved clinical management. A rigorous peer review system is employed and every attempt is made to process and publish top-quality papers promptly. Clinical Biomechanics explores all facets of body system, organ, tissue and cell biomechanics, with an emphasis on medical and clinical applications of the basic science aspects. The role of basic science is therefore recognized in a medical or clinical context. The readership of the journal closely reflects its multi-disciplinary contents, being a balance of scientists, engineers and clinicians. The contents are in the form of research papers, brief reports, review papers and correspondence, whilst special interest issues and supplements are published from time to time. Disciplines covered include biomechanics and mechanobiology at all scales, bioengineering and use of tissue engineering and biomaterials for clinical applications, biophysics, as well as biomechanical aspects of medical robotics, ergonomics, physical and occupational therapeutics and rehabilitation.