Affiliations: Laboratoire de recherche en Imagerie et Orthopédie (LIO), Centre de recherche du Centre hospitalier de l'Université de Montréal (CHUM), Hôpital Notre‐Dame, Montreal, Quebec H2L 4M1, Canada | Groupe de recherche en Biomécanique/Biomatériaux, (GRBB) École Polytechnique, Montreal, Canada | Marienhospital, Erwitte, Germany | Forschungsgruppe Biomechanik, Bochum University, Germany | Laboratoire d'imagerie, de vision et d'intelligence artificielle (LIVIA), École de technologie supérieure, Montreal, Canada
Note: [] Corresponding author: Nicola Hagemeister, Laboratoire de recherche en Imagerie et Orthopédie (LIO), Centre de recherche en musculosquelettique, Arthrose, Centre de recherche du CHUM‐Hôpital Notre‐Dame, Pavillon J.A. de Sève, 1st floor, Room Y‐1614, 1650 Sherbrooke Street East, Montreal, Quebec H2L 4M1, Canada. Tel.: +1 514 890 8000, Ext. 28720; Fax: +1 514 4127785; E‐mail: [email protected].
Abstract: In this project, we compared knee laxity and 3‐D knee kinematics after ACL reconstruction on cadaver knees using (1) bone–patellar tendon–bone two‐tunnel; (2) synthetic ligament two‐tunnel; and (3) synthetic ligament “over‐the‐top” technique. We used a computer assisted system, based on the acquisition of the knee's movement with magnetic sensors (Polhemus, Vermont, USA). The use of personalised three‐dimensional (3D) models of the bones enabled us to ensure a reproducible measurement of three‐dimensional kinematic and laxity parameters. Our results showed that even when knee laxity was restored to normal, 3D kinematic measurements revealed that the reconstructions tended to under or over‐constrain the knee's movement. This study shows that 3D kinematics is a complementary measurement that can be useful to get a better comprehension of the knee's function after ligament reconstruction.
Keywords: Ligament, reconstruction, 3D kinematics, in vitro, evaluation
