3D free-hand ultrasound to register anatomical landmarks at the pelvis and localize the hip joint center in lean and obese individuals
Abstract 3D free-hand ultrasound (3DFUS) is becoming increasingly popular to assist clinical gait analysis because it is cost- and time-efficient and does not expose participants to radiation. The aim of this study was to evaluate its reliability in localizing the anterior superior iliac spine (ASIS...
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2021-05-01
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doaj-4e36e73400814a90b453ec99a1c13a292021-05-23T11:33:12ZengNature Publishing GroupScientific Reports2045-23222021-05-0111111210.1038/s41598-021-89763-73D free-hand ultrasound to register anatomical landmarks at the pelvis and localize the hip joint center in lean and obese individualsBrian Horsak0Caterine Schwab1Sebastian Durstberger2Alexandra Thajer3Susanne Greber-Platzer4Hans Kainz5Ilse Jonkers6Andreas Kranzl7Institute of Health Sciences, St. Pölten University of Applied SciencesInstitute of Health Sciences, St. Pölten University of Applied SciencesLaboratory of Gait and Movement Analysis, Orthopedic Hospital Vienna-SpeisingDepartment of Pediatrics and Adolescent Medicine, Medical University of ViennaDepartment of Pediatrics and Adolescent Medicine, Medical University of ViennaDepartment of Biomechanics, Kinesiology and Applied Computer Science, University of Vienna, Center for Sports Science and University SportsDepartment of Movement Sciences, Human Movement Biomechanics Research Group, KU LeuvenLaboratory of Gait and Movement Analysis, Orthopedic Hospital Vienna-SpeisingAbstract 3D free-hand ultrasound (3DFUS) is becoming increasingly popular to assist clinical gait analysis because it is cost- and time-efficient and does not expose participants to radiation. The aim of this study was to evaluate its reliability in localizing the anterior superior iliac spine (ASIS) at the pelvis and the hip joint centers (HJC). Additionally, we evaluated its accuracy to get a rough estimation of the potential to use of 3DFUS to segment bony surface. This could offer potential to register medical images to motion capture data in future. To evaluate reliability, a test–retest study was conducted in 16 lean and 19 obese individuals. The locations of the ASIS were determined by manual marker placement (MMP), an instrumented pointer technique (IPT), and with 3DFUS. The HJC location was also determined with 3DFUS. To quantify reliability, intraclass correlation coefficients (ICCs), the standard error of measurement (SEm), among other statistical parameters, were calculated for the identified locations between the test and retest. To assess accuracy, the surface of a human plastic pelvic phantom was segmented with 3DFUS in a distilled water bath in 27 trials and compared to a 3D laser scan of the pelvis. Regarding reliability, the MMP, but especially the IPT showed high reliability in lean (SEm: 2–3 mm) and reduced reliability in obese individuals (SEm: 6–15 mm). Compared to MMP and IPT, 3DFUS presented lower reliability in the lean group (SEm: 2–4 mm vs. 2–8 mm, respectively) but slightly better values in the obese group (SEm: 7–11 mm vs. 6–16 mm, respectively). Correlations between test–retest reliability and torso body fat mass (% of body mass) indicated a moderate to strong relationship for MMP and IPT but only a weak correlation for the 3DFUS approach. The water-bath experiments indicated an acceptable level of 3.5 (1.7) mm of accuracy for 3DFUS in segmenting bone surface. Despite some difficulties with single trials, our data give further rise to the idea that 3DFUS could serve as a promising tool in future to inform marker placement and hip joint center location, especially in groups with higher amount of body fat.https://doi.org/10.1038/s41598-021-89763-7 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Brian Horsak Caterine Schwab Sebastian Durstberger Alexandra Thajer Susanne Greber-Platzer Hans Kainz Ilse Jonkers Andreas Kranzl |
spellingShingle |
Brian Horsak Caterine Schwab Sebastian Durstberger Alexandra Thajer Susanne Greber-Platzer Hans Kainz Ilse Jonkers Andreas Kranzl 3D free-hand ultrasound to register anatomical landmarks at the pelvis and localize the hip joint center in lean and obese individuals Scientific Reports |
author_facet |
Brian Horsak Caterine Schwab Sebastian Durstberger Alexandra Thajer Susanne Greber-Platzer Hans Kainz Ilse Jonkers Andreas Kranzl |
author_sort |
Brian Horsak |
title |
3D free-hand ultrasound to register anatomical landmarks at the pelvis and localize the hip joint center in lean and obese individuals |
title_short |
3D free-hand ultrasound to register anatomical landmarks at the pelvis and localize the hip joint center in lean and obese individuals |
title_full |
3D free-hand ultrasound to register anatomical landmarks at the pelvis and localize the hip joint center in lean and obese individuals |
title_fullStr |
3D free-hand ultrasound to register anatomical landmarks at the pelvis and localize the hip joint center in lean and obese individuals |
title_full_unstemmed |
3D free-hand ultrasound to register anatomical landmarks at the pelvis and localize the hip joint center in lean and obese individuals |
title_sort |
3d free-hand ultrasound to register anatomical landmarks at the pelvis and localize the hip joint center in lean and obese individuals |
publisher |
Nature Publishing Group |
series |
Scientific Reports |
issn |
2045-2322 |
publishDate |
2021-05-01 |
description |
Abstract 3D free-hand ultrasound (3DFUS) is becoming increasingly popular to assist clinical gait analysis because it is cost- and time-efficient and does not expose participants to radiation. The aim of this study was to evaluate its reliability in localizing the anterior superior iliac spine (ASIS) at the pelvis and the hip joint centers (HJC). Additionally, we evaluated its accuracy to get a rough estimation of the potential to use of 3DFUS to segment bony surface. This could offer potential to register medical images to motion capture data in future. To evaluate reliability, a test–retest study was conducted in 16 lean and 19 obese individuals. The locations of the ASIS were determined by manual marker placement (MMP), an instrumented pointer technique (IPT), and with 3DFUS. The HJC location was also determined with 3DFUS. To quantify reliability, intraclass correlation coefficients (ICCs), the standard error of measurement (SEm), among other statistical parameters, were calculated for the identified locations between the test and retest. To assess accuracy, the surface of a human plastic pelvic phantom was segmented with 3DFUS in a distilled water bath in 27 trials and compared to a 3D laser scan of the pelvis. Regarding reliability, the MMP, but especially the IPT showed high reliability in lean (SEm: 2–3 mm) and reduced reliability in obese individuals (SEm: 6–15 mm). Compared to MMP and IPT, 3DFUS presented lower reliability in the lean group (SEm: 2–4 mm vs. 2–8 mm, respectively) but slightly better values in the obese group (SEm: 7–11 mm vs. 6–16 mm, respectively). Correlations between test–retest reliability and torso body fat mass (% of body mass) indicated a moderate to strong relationship for MMP and IPT but only a weak correlation for the 3DFUS approach. The water-bath experiments indicated an acceptable level of 3.5 (1.7) mm of accuracy for 3DFUS in segmenting bone surface. Despite some difficulties with single trials, our data give further rise to the idea that 3DFUS could serve as a promising tool in future to inform marker placement and hip joint center location, especially in groups with higher amount of body fat. |
url |
https://doi.org/10.1038/s41598-021-89763-7 |
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