Direct assessment of 3D foot bone kinematics using biplanar X-ray fluoroscopy and an automatic model registration method

Kohta Ito, Koh Hosoda, Masahiro Shimizu, Shuhei Ikemoto, Shinnosuke Kume, Takeo Nagura, Nobuaki Imanishi, Sadakazu Aiso, Masahiro Jinzaki, Naomichi Ogihara

研究成果: Article

14 引用 (Scopus)

抄録

Background: Quantifying detailed 3-dimensional (3D) kinematics of the foot in contact with the ground during locomotion is crucial for understanding the biomechanical functions of the complex musculoskeletal structure of the foot. Biplanar X-ray fluoroscopic systems and model-based registration techniques have recently been employed to capture and visualise 3D foot bone movements in vivo, but such techniques have generally been performed manually. In the present study, we developed an automatic model-registration method with biplanar fluoroscopy for accurate measurement of 3D movements of the skeletal foot. Methods: Three-dimensional surface models of foot bones were generated prior to motion measurement based on computed tomography. The bone models generated were then registered to biplanar fluoroscopic images in a frame-by-frame manner using an optimisation technique, to maximise similarity measures between occluding contours of the bone surface models with edge-enhanced fluoroscopic images, while avoiding mutual penetration of bones. A template-matching method was also introduced to estimate the amount of bone translation and rotation prior to automatic registration. Results: We analysed 3D skeletal movements of a cadaver foot mobilized by a robotic gait simulator. The 3D kinematics of the calcaneus, talus, navicular and cuboid in the stance phase of the gait were successfully reconstructed and quantified using the proposed model-registration method. The accuracy of bone registration was evaluated as 0.27 ± 0.19 mm and 0.24 ± 0.19° (mean ± standard deviation) in translation and rotation, respectively, under static conditions, and 0.36 ± 0.19 mm and 0.42 ± 0.30° in translation and rotation, respectively, under dynamic conditions. Conclusions: The measurement was confirmed to be sufficiently accurate for actual analysis of foot kinematics. The proposed method may serve as an effective tool for understanding the biomechanical function of the human foot during locomotion.

元の言語English
記事番号21
ジャーナルJournal of Foot and Ankle Research
8
発行部数1
DOI
出版物ステータスPublished - 2015 6 10
外部発表Yes

ASJC Scopus subject areas

  • Orthopedics and Sports Medicine

これを引用

Direct assessment of 3D foot bone kinematics using biplanar X-ray fluoroscopy and an automatic model registration method. / Ito, Kohta; Hosoda, Koh; Shimizu, Masahiro; Ikemoto, Shuhei; Kume, Shinnosuke; Nagura, Takeo; Imanishi, Nobuaki; Aiso, Sadakazu; Jinzaki, Masahiro; Ogihara, Naomichi.

:: Journal of Foot and Ankle Research, 巻 8, 番号 1, 21, 10.06.2015.

研究成果: Article

Ito, Kohta ; Hosoda, Koh ; Shimizu, Masahiro ; Ikemoto, Shuhei ; Kume, Shinnosuke ; Nagura, Takeo ; Imanishi, Nobuaki ; Aiso, Sadakazu ; Jinzaki, Masahiro ; Ogihara, Naomichi. / Direct assessment of 3D foot bone kinematics using biplanar X-ray fluoroscopy and an automatic model registration method. :: Journal of Foot and Ankle Research. 2015 ; 巻 8, 番号 1.
@article{b0827b04a12e462d93896149732f4f58,
title = "Direct assessment of 3D foot bone kinematics using biplanar X-ray fluoroscopy and an automatic model registration method",
abstract = "Background: Quantifying detailed 3-dimensional (3D) kinematics of the foot in contact with the ground during locomotion is crucial for understanding the biomechanical functions of the complex musculoskeletal structure of the foot. Biplanar X-ray fluoroscopic systems and model-based registration techniques have recently been employed to capture and visualise 3D foot bone movements in vivo, but such techniques have generally been performed manually. In the present study, we developed an automatic model-registration method with biplanar fluoroscopy for accurate measurement of 3D movements of the skeletal foot. Methods: Three-dimensional surface models of foot bones were generated prior to motion measurement based on computed tomography. The bone models generated were then registered to biplanar fluoroscopic images in a frame-by-frame manner using an optimisation technique, to maximise similarity measures between occluding contours of the bone surface models with edge-enhanced fluoroscopic images, while avoiding mutual penetration of bones. A template-matching method was also introduced to estimate the amount of bone translation and rotation prior to automatic registration. Results: We analysed 3D skeletal movements of a cadaver foot mobilized by a robotic gait simulator. The 3D kinematics of the calcaneus, talus, navicular and cuboid in the stance phase of the gait were successfully reconstructed and quantified using the proposed model-registration method. The accuracy of bone registration was evaluated as 0.27 ± 0.19 mm and 0.24 ± 0.19° (mean ± standard deviation) in translation and rotation, respectively, under static conditions, and 0.36 ± 0.19 mm and 0.42 ± 0.30° in translation and rotation, respectively, under dynamic conditions. Conclusions: The measurement was confirmed to be sufficiently accurate for actual analysis of foot kinematics. The proposed method may serve as an effective tool for understanding the biomechanical function of the human foot during locomotion.",
author = "Kohta Ito and Koh Hosoda and Masahiro Shimizu and Shuhei Ikemoto and Shinnosuke Kume and Takeo Nagura and Nobuaki Imanishi and Sadakazu Aiso and Masahiro Jinzaki and Naomichi Ogihara",
year = "2015",
month = "6",
day = "10",
doi = "10.1186/s13047-015-0079-4",
language = "English",
volume = "8",
journal = "Journal of Foot and Ankle Research",
issn = "1757-1146",
publisher = "BioMed Central",
number = "1",

}

TY - JOUR

T1 - Direct assessment of 3D foot bone kinematics using biplanar X-ray fluoroscopy and an automatic model registration method

AU - Ito, Kohta

AU - Hosoda, Koh

AU - Shimizu, Masahiro

AU - Ikemoto, Shuhei

AU - Kume, Shinnosuke

AU - Nagura, Takeo

AU - Imanishi, Nobuaki

AU - Aiso, Sadakazu

AU - Jinzaki, Masahiro

AU - Ogihara, Naomichi

PY - 2015/6/10

Y1 - 2015/6/10

N2 - Background: Quantifying detailed 3-dimensional (3D) kinematics of the foot in contact with the ground during locomotion is crucial for understanding the biomechanical functions of the complex musculoskeletal structure of the foot. Biplanar X-ray fluoroscopic systems and model-based registration techniques have recently been employed to capture and visualise 3D foot bone movements in vivo, but such techniques have generally been performed manually. In the present study, we developed an automatic model-registration method with biplanar fluoroscopy for accurate measurement of 3D movements of the skeletal foot. Methods: Three-dimensional surface models of foot bones were generated prior to motion measurement based on computed tomography. The bone models generated were then registered to biplanar fluoroscopic images in a frame-by-frame manner using an optimisation technique, to maximise similarity measures between occluding contours of the bone surface models with edge-enhanced fluoroscopic images, while avoiding mutual penetration of bones. A template-matching method was also introduced to estimate the amount of bone translation and rotation prior to automatic registration. Results: We analysed 3D skeletal movements of a cadaver foot mobilized by a robotic gait simulator. The 3D kinematics of the calcaneus, talus, navicular and cuboid in the stance phase of the gait were successfully reconstructed and quantified using the proposed model-registration method. The accuracy of bone registration was evaluated as 0.27 ± 0.19 mm and 0.24 ± 0.19° (mean ± standard deviation) in translation and rotation, respectively, under static conditions, and 0.36 ± 0.19 mm and 0.42 ± 0.30° in translation and rotation, respectively, under dynamic conditions. Conclusions: The measurement was confirmed to be sufficiently accurate for actual analysis of foot kinematics. The proposed method may serve as an effective tool for understanding the biomechanical function of the human foot during locomotion.

AB - Background: Quantifying detailed 3-dimensional (3D) kinematics of the foot in contact with the ground during locomotion is crucial for understanding the biomechanical functions of the complex musculoskeletal structure of the foot. Biplanar X-ray fluoroscopic systems and model-based registration techniques have recently been employed to capture and visualise 3D foot bone movements in vivo, but such techniques have generally been performed manually. In the present study, we developed an automatic model-registration method with biplanar fluoroscopy for accurate measurement of 3D movements of the skeletal foot. Methods: Three-dimensional surface models of foot bones were generated prior to motion measurement based on computed tomography. The bone models generated were then registered to biplanar fluoroscopic images in a frame-by-frame manner using an optimisation technique, to maximise similarity measures between occluding contours of the bone surface models with edge-enhanced fluoroscopic images, while avoiding mutual penetration of bones. A template-matching method was also introduced to estimate the amount of bone translation and rotation prior to automatic registration. Results: We analysed 3D skeletal movements of a cadaver foot mobilized by a robotic gait simulator. The 3D kinematics of the calcaneus, talus, navicular and cuboid in the stance phase of the gait were successfully reconstructed and quantified using the proposed model-registration method. The accuracy of bone registration was evaluated as 0.27 ± 0.19 mm and 0.24 ± 0.19° (mean ± standard deviation) in translation and rotation, respectively, under static conditions, and 0.36 ± 0.19 mm and 0.42 ± 0.30° in translation and rotation, respectively, under dynamic conditions. Conclusions: The measurement was confirmed to be sufficiently accurate for actual analysis of foot kinematics. The proposed method may serve as an effective tool for understanding the biomechanical function of the human foot during locomotion.

UR - http://www.scopus.com/inward/record.url?scp=85027926714&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85027926714&partnerID=8YFLogxK

U2 - 10.1186/s13047-015-0079-4

DO - 10.1186/s13047-015-0079-4

M3 - Article

AN - SCOPUS:85027926714

VL - 8

JO - Journal of Foot and Ankle Research

JF - Journal of Foot and Ankle Research

SN - 1757-1146

IS - 1

M1 - 21

ER -