Document Type
Article
Publication Date
1-1-2011
Abstract
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. © The International Society for Prosthetics and Orthotics 2011.
Keywords
Lower limb, Prosthetics, Rehabilitation, Transtibial, adult, aged, article, clinical article, correlation coefficient, human, male, measurement, medical photography, prosthesis, transtibial prosthesis, weight bearing, Artificial Limbs, Biomechanics, Humans, Middle Aged, Photography, Prosthesis Design, Prosthesis Implantation, Tibia, Weight-Bearing
Divisions
fac_eng
Publication Title
Prosthetics and Orthotics International
Volume
35
Issue
4
Publisher
SAGE Publications
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. doi: 10.1177/0309364611423130. Epub 2011 Oct 5.