Ligament function in restraining axial rotation of the tibia relative to the femur cannot be revealed by analysis of ligament forces alone. The action of the articular surfaces should be taken into account as well. In this study: three-dimensional mathematical models of four human knee joints were used to determine the limits of axial rotation between 0 and 90 degrees of flexion, whereby the forces in the ligaments and articular contact were calculated, together with their contribution to the restraint moment that was required to counterbalance the applied axial moment of 3 Nm. In external rotation, the direct axial restraint was provided by the collateral ligaments. In internal rotation, when the cruciate ligaments and medial collateral ligament were predominantly loaded, the direct restraint moment resulting from the ligament forces was not sufficient to counterbalance the applied moment. The articular contact forces, which resulted from balancing the axial components of the ligament forces? contributed considerably to the restraint of internal rotation. Depending on the flexion angle, the contact forces provided approximately 50-85% of the internal restraint, whereas 95-100% of the external rotation restraint was accounted for by the ligament forces


    Access

    Download


    Export, share and cite



    Title :

    A mechanism for rotation restraints in the knee joint


    Contributors:

    Publication date :

    1996-01-01


    Remarks:

    Blankevoort , L & Huiskes , H W J 1996 , ' A mechanism for rotation restraints in the knee joint ' , Journal of Orthopaedic Research , vol. 14 , no. 4 , pp. 676-679 . https://doi.org/10.1002/jor.1100140425



    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    DDC:    629



    Rotation driving knee joint of hydraulic biped robot

    YUAN CHAOHUI / LI YINGXING / ZHANG GUICHI et al. | European Patent Office | 2023

    Free access

    Child Restraints

    NTIS | 1994


    Wheelchair restraints

    BROTHERWOOD RODNEY JOHN | European Patent Office | 2015

    Free access

    Passive Restraints

    L. Flynn | NTIS | 1979


    Deployable Head Restraints

    J. F. Hilyard / J. W. Melvin / J. H. McElhaney | NTIS | 1973