Location of Repository

Date Approved

By Benjamin James Ellis, Benjamin James Ellis, Richard D. Rabbitt, James E. Guilkey and Christopher L. Peters

Abstract

The medial collateral ligament (MCL) is the primary restraint to knee valgus rotation and a secondary restraint to anterior tibial translation. The anterior cruciate ligament (ACL) is a primary restraint to anterior tibial translation, but its contribution to valgus restraint was debated. To address this, a combined experimental and computational study was conducted to determine the effect of ACL injury on MCL insertion site and contact forces during valgus loading and anterior tibial loading. Six finite element (FE) models were constructed and used to simulate boundary and loading conditions from corresponding cadaveric experiments. It was shown that in the ACL-deficient knee, the MCL is indeed subjected to higher insertion site and contact forces in response to an anterior load. However, MCL forces due to a valgus torque were not significantly increased in the ACL-deficient knee. It follows that the MCL resists anterior tibial translation when the ACL is intact, but the ACL is not a restraint to valgus rotation when a healthy MCL is present. Physical diagnostic exams are the most crucial step for diagnosis of the location of injury to the shoulder capsule, but the exams are relatively imprecise and the join

Year: 2012
OAI identifier: oai:CiteSeerX.psu:10.1.1.363.3837
Provided by: CiteSeerX
Download PDF:
Sorry, we are unable to provide the full text but you may find it at the following location(s):
  • http://citeseerx.ist.psu.edu/v... (external link)
  • http://mrl.sci.utah.edu/papers... (external link)
  • Suggested articles


    To submit an update or takedown request for this paper, please submit an Update/Correction/Removal Request.