Adequate primary stability of the acetabular revision construct is necessary for long-term implant survival. The difference in primary stability between tantalum and titanium components is unclear. Six composite hemipelvises with an acetabular defect were implanted with a tantalum augment and cup, using cement fixation between cup and augment. Relative motion was measured at cup/bone, cup/augment and bone/augment interfaces at three load levels; the results were compared to the relative motion measured at the same interfaces of a titanium cup/augment construct of identical dimensions, also implanted into composite bone. The implants showed little relative motion at all load levels between the augment and cup. At the bone/augment and bone/cup interfaces the titanium implants showed less relative motion than tantalum at 30% load (p < 0.001), but more relative motion at 50% (p = n.s.) and 100% (p < 0001) load. The load did not have a significant effect at the augment/cup interface (p = 0.086); it did have a significant effect on relative motion of both implant materials at bone/cup and bone/augment interfaces (p < 0.001). All interfaces of both constructs displayed relative motion that should permit osseointegration. Tantalum, however, may provide a greater degree of primary stability at higher loads than titanium. The clinical implication is yet to be seen.


    Zugriff

    Download


    Exportieren, teilen und zitieren



    Titel :

    Comparison of the Primary Stability of Porous Tantalum and Titanium Acetabular Revision Constructs.


    Beteiligte:

    Erscheinungsdatum :

    2020-04-10


    Anmerkungen:

    Beckmann, Nicholas A.; Bitsch, Rudi G; Schonhoff, Mareike; Siebenrock, Klaus-Arno; Schwarze, Martin; Jaeger, Sebastian (2020). Comparison of the Primary Stability of Porous Tantalum and Titanium Acetabular Revision Constructs. Materials, 13(7) Molecular Diversity Preservation International MDPI 10.3390/ma13071783


    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch


    Schlagwörter :

    Klassifikation :

    DDC:    629



    Tensile Deformation of Titanium-Tantalum Alloys

    Cotton, J. D. / Bingert, J. F. / TMS; Structural Materials Division | British Library Conference Proceedings | 1995


    Primary stability of a press-fit cup in combination with impaction grafting in an acetabular defect model

    Schierjott R. A. / Hettich G. / Baxmann M. et al. | BASE | 2021

    Freier Zugriff

    The state of carbon in titanium, tantalum, and tungsten

    Francevič, I. N. / Kovenʹskij, I. I. | TIBKAT | 1964


    Patterns of Acetabular Femoral Head Coverage

    Kohoyda-Inglis, Carla / Goulet, James A. / Wang, Lu et al. | SAE Technical Papers | 2011


    Atmospheric Plasma Treatment of Porous Polymer Constructs for Tissue Engineering Applications

    Safinia, L. / Wilson, K. / Mantalaris, A. et al. | British Library Online Contents | 2007