Development of two-dimensional biomechanical modeling of the thumb for pipetting

Eunsik Kim, Andris Freivalds, Kiseok Sung, Jay Cho

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

The aim of this study is to develop a two-dimensional biomechanical static thumb model based on the posture of the hand using pipette. This model used hand anatomy and static equilibrium conditions to estimate internal tendon forces against a given external force. The input variables can be divided into two groups: 1) joint angle, external load and bone length, which are directly measured from the test; and 2) tendon force ratio and moment arm, which are adopted from previous studies. The thumb model was simulated using an FSR (forcesensing resistor) and validated using an Electromyography (EMG) system with four grip heights from 1 to 4 cm and with two tasks: Aspirating and Dispensing. A similar trend was observed between the simulation and EMG results. The average thumb pressure for Dispensing tasks is about 3.1 times greater than that for Aspirating, and the overall force efficiency ratio for both tasks is around 8 times the external load. The optimal grip height is 3 cm in terms of grip strength, 1 or 3 cm in terms of minimum internal force and 1 cm in terms of force efficiency. Overall, the optimal grip height is 1 or 3 cm.

Original languageEnglish (US)
Title of host publication2015 International Annual Meeting of the Human Factors and Ergonomics Society, HFES 2015
PublisherHuman Factors an Ergonomics Society Inc.
Pages1212-1216
Number of pages5
ISBN (Electronic)9780945289470
DOIs
StatePublished - Jan 1 2015
Event59th International Annual Meeting of the Human Factors and Ergonomics Society, HFES 2014 - Los Angeles, United States
Duration: Oct 26 2015Oct 30 2015

Publication series

NameProceedings of the Human Factors and Ergonomics Society
Volume2015-January
ISSN (Print)1071-1813

Other

Other59th International Annual Meeting of the Human Factors and Ergonomics Society, HFES 2014
CountryUnited States
CityLos Angeles
Period10/26/1510/30/15

Fingerprint

Electromyography
Tendons
efficiency
Resistors
Bone
simulation
trend
Group

All Science Journal Classification (ASJC) codes

  • Human Factors and Ergonomics

Cite this

Kim, E., Freivalds, A., Sung, K., & Cho, J. (2015). Development of two-dimensional biomechanical modeling of the thumb for pipetting. In 2015 International Annual Meeting of the Human Factors and Ergonomics Society, HFES 2015 (pp. 1212-1216). (Proceedings of the Human Factors and Ergonomics Society; Vol. 2015-January). Human Factors an Ergonomics Society Inc.. https://doi.org/10.1177/1541931215591190
Kim, Eunsik ; Freivalds, Andris ; Sung, Kiseok ; Cho, Jay. / Development of two-dimensional biomechanical modeling of the thumb for pipetting. 2015 International Annual Meeting of the Human Factors and Ergonomics Society, HFES 2015. Human Factors an Ergonomics Society Inc., 2015. pp. 1212-1216 (Proceedings of the Human Factors and Ergonomics Society).
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Kim, E, Freivalds, A, Sung, K & Cho, J 2015, Development of two-dimensional biomechanical modeling of the thumb for pipetting. in 2015 International Annual Meeting of the Human Factors and Ergonomics Society, HFES 2015. Proceedings of the Human Factors and Ergonomics Society, vol. 2015-January, Human Factors an Ergonomics Society Inc., pp. 1212-1216, 59th International Annual Meeting of the Human Factors and Ergonomics Society, HFES 2014, Los Angeles, United States, 10/26/15. https://doi.org/10.1177/1541931215591190

Development of two-dimensional biomechanical modeling of the thumb for pipetting. / Kim, Eunsik; Freivalds, Andris; Sung, Kiseok; Cho, Jay.

2015 International Annual Meeting of the Human Factors and Ergonomics Society, HFES 2015. Human Factors an Ergonomics Society Inc., 2015. p. 1212-1216 (Proceedings of the Human Factors and Ergonomics Society; Vol. 2015-January).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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Kim E, Freivalds A, Sung K, Cho J. Development of two-dimensional biomechanical modeling of the thumb for pipetting. In 2015 International Annual Meeting of the Human Factors and Ergonomics Society, HFES 2015. Human Factors an Ergonomics Society Inc. 2015. p. 1212-1216. (Proceedings of the Human Factors and Ergonomics Society). https://doi.org/10.1177/1541931215591190