A new approach for the pistoning measurement in transtibial prosthesis

Gholizadeh, H.; Abu Osman, N.A.; Luviksdottir, A.; Eshraghi, A.; Kamyab, M.; Abas, W. (2011) A new approach for the pistoning measurement in transtibial prosthesis. Prosthetics and Orthotics International, 35 (4). pp. 360-364. ISSN 0309-3646

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    Background: Good suspension lessens the pistoning (vertical displacement) of the residual limb inside the prosthetic socket. Several methods are used for measuring the pistoning. Study Design: Clinical trial. Objectives: To introduce and evaluate a new simple method for measuring the pistoning between the soft liner and socket in transtibial prostheses. Methods: Five transtibial prostheses with Iceross silicone liner and shuttle lock were made for the subjects. The pistoning was measured between the liner and socket by a photographic method in single limb support on the prosthetic limb (full weight bearing), non-weight bearing and under three static axial loading conditions (30, 60 and 90 N). Results: This new method enabled us to measure the pistoning between the liner and prosthetic socket. The reproducibility of measurements in different trials of one session and between two sessions by two observers was shown to be high. The average of displacement between the liner and socket was about 9 mm in non-weight bearing compared with full weight bearing. Furthermore, as we expected, the average of pistoning increased consistently by adding the loads. Conclusions: This new method provides for easy and inexpensive determination of pistoning between the liner and socket by every prosthetist in clinical settings.

    Item Type: Article
    1. Gholizadeh, H.
    2. Abu Osman, N.A.( Department of Biomedical Engineering, Faculty of Engineering Building, University of Malaya, 50603 Kuala Lumpur, MALAYSIA)
    3. Luviksdottir, A.
    4. Eshraghi, A.
    5. Kamyab, M.
    6. Abas, W.
    Journal or Publication Title: Prosthetics and Orthotics International
    Additional Information: Gholizadeh, Hossein Abu Osman, Noor Azuan Luviksdottir, Asa Gulaug Eshraghi, Arezoo Kamyab, Mojtaba Wan Abas, Wan Abu Bakar eng Clinical Trial Research Support, Non-U.S. Gov't England 2011/10/07 06:00 Prosthet Orthot Int. 2011 Dec;35(4):360-4. Epub 2011 Oct 5.
    Uncontrolled Keywords: Adult, Aged, *Artificial Limbs, Biomechanics, Humans, Male, Middle Aged, Photography, Prosthesis Design/*instrumentation/*methods, Prosthesis Implantation, *Tibia, Weight-Bearing.
    Subjects: T Technology > TA Engineering (General). Civil engineering (General)
    Divisions: Faculty of Engineering
    Depositing User: Mr Jenal S
    Date Deposited: 04 Dec 2012 10:23
    Last Modified: 11 Dec 2013 12:06
    URI: http://eprints.um.edu.my/id/eprint/4416

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