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Портал Begell Электронная Бибилиотека e-Книги Журналы Справочники и Сборники статей Коллекции
Journal of Long-Term Effects of Medical Implants
SJR: 0.145 SNIP: 0.491 CiteScore™: 0.89

ISSN Печать: 1050-6934
ISSN Онлайн: 1940-4379

Выпуски:
Том 30, 2020 Том 29, 2019 Том 28, 2018 Том 27, 2017 Том 26, 2016 Том 25, 2015 Том 24, 2014 Том 23, 2013 Том 22, 2012 Том 21, 2011 Том 20, 2010 Том 19, 2009 Том 18, 2008 Том 17, 2007 Том 16, 2006 Том 15, 2005 Том 14, 2004 Том 13, 2003 Том 12, 2002 Том 11, 2001 Том 10, 2000

Journal of Long-Term Effects of Medical Implants

DOI: 10.1615/JLongTermEffMedImplants.2020035597
pages 125-129

Comparison of Biomechanical Properties of a Synthetic L3-S1 Spine Model and Cadaveric Human Samples

Anita Vijapura
Department of Orthopaedic Surgery, University of Miami, Miami, FL
David N. Kaimrajh
Max Biedermann Institute for Biomechanics at Mount Sinai, Miami Beach, FL
Edward L. Milne
Max Biedermann Institute for Biomechanics at Mount Sinai, Miami Beach, FL
Loren L. Latta
Max Biedermann Institute for Biomechanics, Mount Sinai Medical Center, Miami Beach, FL; Department of Mechanical Engineering, University of Miami, Coral Gables, FL; Department of Orthopaedics, University of Miami, Miller School of Medicine, Miami, FL 33136
Francesco Travascio
Department of Orthopaedic Surgery, University of Miami, Miami, FL; Max Biedermann Institute for Biomechanics at Mount Sinai, Miami Beach, FL; Department of Mechanical and Aerospace Engineering, University of Miami, Coral Gables, FL

Краткое описание

Human cadavers currently represent the gold standard for spine biomechanical testing, but limitations such as costs, storage, handling, and high interspecimen variance motivate the development of alternatives. A commercially available synthetic surrogate for the human spine, the Sawbones spine model (SBSM), has been developed. The equivalence of SBSM to a human cadaver in terms of biomechanical behavior has not been fully assessed. The objective of this study is to compare the biomechanics of a lumbar tract of SBSM to that of a cadaver under physiologically relevant mechanical loads. An L3-S1 SBSM and 39 comparable human cadaver lumbar spine tracts were used. Each sample was loaded in pure flexion-extension or torsion. Gravity and follower loads were also included. The movement of each vertebral body was tracked via motion capture. The range of motion (ROM) of each spine segment was recorded, as well as the overall stiffness of each L3-S1 sample. The ROM of SBSM L3-L4 was larger than that found in cadavers in flexion-extension and torsion. For the other spine levels, the ROMs of SBSM were within one standard deviation from the mean values measured in cadavers. The values of structural stiffness for L3-S1 of SBSM were comparable to those of cadaveric specimens for both flexion and torsion. In extension, SBSM was more compliant than cadavers. In conclusion, most of the biomechanical properties of an L3-S1 SBSM model were comparable to those of human cadaveric specimens, supporting the use of this synthetic surrogate for testing applications.

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