Biomechanical evaluation of a bioactive artificial anterior cruciate ligament

  • Guerard, Sandra (Institut de Biomecanique Humaine George Charpak, Arts et Metiers ParisTech) ;
  • Manassero, Mathieu (Ecole Nationale Veterinaire d'Alfort, Service de Chirurgie) ;
  • Viateau, Veronique (Ecole Nationale Veterinaire d'Alfort, Service de Chirurgie) ;
  • Migonney, Veronique (Universite Paris 13, Laboratoire de Biomateriaux et Polymeres de Specialite/CSPBAT, UMR CNRS 7244) ;
  • Skalli, Wafa (Institut de Biomecanique Humaine George Charpak, Arts et Metiers ParisTech) ;
  • Mitton, David (Institut de Biomecanique Humaine George Charpak, Arts et Metiers ParisTech)
  • Received : 2014.03.12
  • Accepted : 2015.01.23
  • Published : 2014.12.25


This study aimed to assess the biomechanical performance of a new generation of artificial ligament, which can be considered "bioactive" and "biointegrated," implanted in sheep. Thirty sheep were implanted: 15 sheep received the artificial ligament grafted with a bioactive polymer (grafted) and 15 received the artificial ligament without a bioactive polymer (non-grafted). The animals were sacrificed 3 or 12 months after implantation. The knee kinematics, namely flexion-extension, anterior drawer, and varus-valgus tests, were evaluated using a fully characterized custom-made device. Afterward, the specimens were tested under uniaxial tension until failure. The flexion-extension showed significant differences between (grafted or non-grafted) artificial and native ligaments 3 months after implantation. This difference became non-significant 12 months postoperatively. The anterior tibial drawer was significantly increased 3 months after implantation and remained significantly different only for non-grafted ligament 12 months after implantation. Twelve months after implantation, the differences between grafted and non-grafted ligament biomechanical properties were significant in terms of stiffness. In terms of load to failure, grafted ligaments seem to have had slightly better performance than non-grafted ligaments 12 months postoperatively. Overall these results suggest that grafted artificial ligaments have slightly better biomechanical characteristics than non-grafted artificial ligaments 12 months after implantation in sheep.



Supported by : Agence Nationale pour la Recherche (ANR)


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