Herbert, A, Brown, C, Rooney, P et al. (3 more authors) (2016) Bi-linear mechanical property determination of acellular human patellar tendon grafts for use in anterior cruciate ligament replacement. Journal of Biomechanics, 49 (9). pp. 1607-1612. ISSN 0021-9290
Abstract
Anterior cruciate ligament rupture is rising in its prevalence amongst the young and those with physically active lifestyles. Acellular human patellar tendon (PT) grafts offer a promising restoration solution, returning knee joint stability and overcoming some of the current disadvantages of autologous or allogeneic grafts. However, it is necessary to ensure that the decellularisation bio-processes involved do not cause structural changes in the microstructure of the tendon tissue that may adversely affect the mechanical properties, particularly with respect to the physiological range of loading.Sixteen cadaveric human PT grafts were sourced and processed from eight donors, with full ethical approval and consent for use in research. Eight specimens were allocated for decellularisation, while the remaining eight contralateral specimens were used as native controls. Testing consisted of 12 preconditioning cycles followed by uniaxial extension until failure occurred. Stress-strain data was then fitted to a bi-linear model using least squares regression by a custom-written Matlab script. The elastic moduli for the toe region and linear region of each specimen were determined, in addition to the transition point co-ordinates and strain energy density for increasing strain. No significant differences were found between groups for all of the parameters investigated. Hence, the shape and magnitude of the stress-strain profile was found to be the same for both groups throughout loading.The results of this study indicated that decellularisation appeared to have no effect on the material properties of human PT grafts under quasistatic conditions. Therefore, acellular human PT grafts can offer a viable additional solution for ACL replacement compared to current autologous and allogeneic treatment options.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | (c) 2016. Published by Elsevier Ltd. This is an open access article under a Creative Commons license http://creativecommons.org/licenses/by/4.0/ |
Keywords: | Acellular biological scaffold; ACL replacement; Patellar tendon |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Biological Sciences (Leeds) > School of Biomedical Sciences (Leeds) The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Mechanical Engineering (Leeds) > Institute of Medical and Biological Engineering (iMBE) (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 23 May 2016 13:33 |
Last Modified: | 21 Jun 2016 09:03 |
Published Version: | http://dx.doi.org/10.1016/j.jbiomech.2016.03.041 |
Status: | Published |
Publisher: | Elsevier |
Identification Number: | 10.1016/j.jbiomech.2016.03.041 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:99112 |