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Bioabsorbable Cross Pin vs Endobutton for ACL Reconstruction: A Biomechanical Study in Porcine Model

[+] Author Affiliations
Carlos Rodrigo de Mello Roesler, André Luiz Almeida Pizzolatti, Eduardo Fancello, Ari Digiacomo Ocampo Moré

Santa Catarina Federal University, Santa Catarina, Brazil

Paper No. SBC2013-14063, pp. V01AT20A004; 2 pages
  • ASME 2013 Summer Bioengineering Conference
  • Volume 1A: Abdominal Aortic Aneurysms; Active and Reactive Soft Matter; Atherosclerosis; BioFluid Mechanics; Education; Biotransport Phenomena; Bone, Joint and Spine Mechanics; Brain Injury; Cardiac Mechanics; Cardiovascular Devices, Fluids and Imaging; Cartilage and Disc Mechanics; Cell and Tissue Engineering; Cerebral Aneurysms; Computational Biofluid Dynamics; Device Design, Human Dynamics, and Rehabilitation; Drug Delivery and Disease Treatment; Engineered Cellular Environments
  • Sunriver, Oregon, USA, June 26–29, 2013
  • Conference Sponsors: Bioengineering Division
  • ISBN: 978-0-7918-5560-7
  • Copyright © 2013 by ASME


Purpose: The aim of this study was to compare the biomechanical performance between Cross Pin and EndoButton methods of graft fixation in femur portion of anterior cruciate ligament (ACL) reconstruction. Methods: Twenty porcine femur, 10 for Biosteon Cross Pin and 10 for EndoButton, were submitted to cyclic loading between 50 N to 250 N for 1000 cycles at 1 Hz. For devices that not failed during cyclic loading, a tensile test to failure was performed at strain rate of 50 mm/min. Results: There were no differences in the cyclic loading test and ultimate failure load between Cross Pin and EndoButton. However, the Cross Pin was stiffer than EndoButton. Results: The Cross Pin shows to be a better option than EndoButton when tested on porcine knee model according the methodology present in this work.

Copyright © 2013 by ASME



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