Development and validation of a fiber-based ACL model for surgical simulations

S. Martelli, A. Joukhadar, S. Zaffagnini, M. Marcacci

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

ACL has a fundamental role in knee biomechanics and ACL insufficiency is probably the most common knee pathology. Nevertheless complete knowledge of ACL biomechanics is not achieved and predictions on ACL behaviour or optimal treatment are hard and still controversial, although of primary importance for a safe and good individual reconstruction. In this paper we describe the construction and validation of a new ACL model, computable by its anatomical description and aiming at reliable predictions in a virtual surgical environment. In our model, ACL is made of 9 curvilinear connected fibers, corresponding to the individual surface fibers, which are described as a succession of 20 punctual physical particles linked by linear viscoelastic relations, and they can twist, bend and stretch under applied forces. The model has been validated on 4 fresh pig knees and has given very consistent results to describe the ligament's anatomy, function and mechanics. Simulations of passive kinematics give interesting results on fibers elongations, forces and ligament deformations, confirming the expected correlation between fibers' strain and stress. The advantage and the feature of this method with respect to previous models is the possibility to take into account more accurately ACL anatomy, mechanical properties and the ligament behaviour during the whole range of motion. All input are geometrical data, that can be acquired in fixed position. The output is the simulation of ACL that describes the forces exerted and respects sizes and shapes of the ligament. The model accuracy and the simple input it requires let us envisage a useful application on human ACL to develop surgical planning and simulation.

Original languageEnglish
Title of host publicationLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
PublisherSpringer Verlag
Pages644-652
Number of pages9
Volume1205
ISBN (Print)3540627340, 9783540627340
Publication statusPublished - 1997
Event1st International Joint Conference on Computer Vision, Virtual Reality, and Robotics in Medicine and Medical Robotics and Computer Assisted Surgery, CVRMed-MRCAS 1997 - Grenoble, France
Duration: Mar 19 1997Mar 22 1997

Publication series

NameLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
Volume1205
ISSN (Print)03029743
ISSN (Electronic)16113349

Other

Other1st International Joint Conference on Computer Vision, Virtual Reality, and Robotics in Medicine and Medical Robotics and Computer Assisted Surgery, CVRMed-MRCAS 1997
CountryFrance
CityGrenoble
Period3/19/973/22/97

ASJC Scopus subject areas

  • Computer Science(all)
  • Theoretical Computer Science

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  • Cite this

    Martelli, S., Joukhadar, A., Zaffagnini, S., & Marcacci, M. (1997). Development and validation of a fiber-based ACL model for surgical simulations. In Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) (Vol. 1205, pp. 644-652). (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics); Vol. 1205). Springer Verlag.