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Article

A Linkage Representation of the Human Hand Skeletal System Using CT Hand Scan Images

1
School of Artificial Intelligence and Computer Science, Jiangnan University, Wuxi 214122, China
2
Department of Industrial and Management Engineering, Pohang University of Science and Technology, Pohang 37673, Korea
3
Department of Rehabilitation Medicine, Pohang Stroke and Spine Hospital, Pohang 37659, Korea
*
Author to whom correspondence should be addressed.
Academic Editor: Mark King
Appl. Sci. 2021, 11(13), 5857; https://doi.org/10.3390/app11135857
Received: 30 May 2021 / Revised: 17 June 2021 / Accepted: 22 June 2021 / Published: 24 June 2021
(This article belongs to the Special Issue Novel Approaches and Applications in Ergonomic Design)
The present study proposed a method for establishing a linkage representation of the human hand skeletal system. Hand skeletons of 15 male subjects were reconstructed from computed tomography (CT) scans in 10 different postures selected from a natural hand-closing motion. The wrist joint center was estimated as the intersection of the centerline of the metacarpal of the middle finger and the distal wrist crease. The remaining joint centers were kinematically estimated based on the relative motion between the distal bone segment and the proximal bone segment of a given joint. A hand linkage representation was then formed by connecting the derived joint centers. Regression models for predicting internal hand link lengths using hand length as the independent variable were established. In addition, regression models for predicting the joint center coordinates of the thumb carpometacarpal (CMC) and finger metacarpophalangeal (MCP) joints using hand length or hand breadth were established. Our models showed higher R2 values and lower maximum standard errors than the existing models. The findings of the present study can be applied to hand models for ergonomic design and biomechanical modeling. View Full-Text
Keywords: linkage representation; hand skeletal system; joint center of rotation; CT scan linkage representation; hand skeletal system; joint center of rotation; CT scan
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MDPI and ACS Style

Cao, Y.; Yang, X.; Lim, Z.; Jung, H.; Park, D.; You, H. A Linkage Representation of the Human Hand Skeletal System Using CT Hand Scan Images. Appl. Sci. 2021, 11, 5857. https://doi.org/10.3390/app11135857

AMA Style

Cao Y, Yang X, Lim Z, Jung H, Park D, You H. A Linkage Representation of the Human Hand Skeletal System Using CT Hand Scan Images. Applied Sciences. 2021; 11(13):5857. https://doi.org/10.3390/app11135857

Chicago/Turabian Style

Cao, Ying, Xiaopeng Yang, Zhichan Lim, Hayoung Jung, Dougho Park, and Heecheon You. 2021. "A Linkage Representation of the Human Hand Skeletal System Using CT Hand Scan Images" Applied Sciences 11, no. 13: 5857. https://doi.org/10.3390/app11135857

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