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A non-contact measurement system for the range of motion of the hand

Pham, Trieu, Pathirana, Pubudu N., Trinh, Hieu and Fay, Pearse 2015, A non-contact measurement system for the range of motion of the hand, Sensors, vol. 15, no. 8, pp. 18315-18333, doi: 10.3390/s150818315.

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Title A non-contact measurement system for the range of motion of the hand
Author(s) Pham, Trieu
Pathirana, Pubudu N.ORCID iD for Pathirana, Pubudu N. orcid.org/0000-0001-8014-7798
Trinh, HieuORCID iD for Trinh, Hieu orcid.org/0000-0003-3438-9969
Fay, PearseORCID iD for Fay, Pearse orcid.org/0000-0002-5681-0235
Journal name Sensors
Volume number 15
Issue number 8
Start page 18315
End page 18333
Total pages 19
Publisher MDPI
Place of publication Basel, Switzerland
Publication date 2015
ISSN 1424-8220
Keyword(s) hand
non-contact measurement
range of motion
total active movement
Summary An accurate and standardised tool to measure the active range of motion (ROM) of the hand is essential to any progressive assessment scenario in hand therapy practice. Goniometers are widely used in clinical settings for measuring the ROM of the hand. However, such measurements have limitations with regard to inter-rater and intra-rater reliability and involve direct physical contact with the hand, possibly increasing the risk of transmitting infections. The system proposed in this paper is the first non-contact measurement system utilising Intel Perceptual Technology and a Senz3D Camera for measuring phalangeal joint angles. To enhance the accuracy of the system, we developed a new approach to achieve the total active movement without measuring three joint angles individually. An equation between the actual spacial position and measurement value of the proximal inter-phalangeal joint was established through the measurement values of the total active movement, so that its actual position can be inferred. Verified by computer simulations, experimental results demonstrated a significant improvement in the calculation of the total active movement and successfully recovered the actual position of the proximal inter-phalangeal joint angles. A trial that was conducted to examine the clinical applicability of the system involving 40 healthy subjects confirmed the practicability and consistency in the proposed system. The time efficiency conveyed a stronger argument for this system to replace the current practice of using goniometers.
Notes Reproduced with the kind permission of the copyright owner.
Language eng
DOI 10.3390/s150818315
Field of Research 089999 Information and Computing Sciences not elsewhere classified
Socio Economic Objective 970109 Expanding Knowledge in Engineering
HERDC Research category C1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2015, MDPI
Free to Read? Yes
Persistent URL http://hdl.handle.net/10536/DRO/DU:30074960

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Every reasonable effort has been made to ensure that permission has been obtained for items included in DRO. If you believe that your rights have been infringed by this repository, please contact drosupport@deakin.edu.au.