Comparison of the primary stability of porous tantalum and titanium acetabular revision constructs
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, u...
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| Hauptverfasser: | , , , , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
10 April 2020
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| In: |
Materials
Year: 2020, Jahrgang: 13, Heft: 7 |
| ISSN: | 1996-1944 |
| DOI: | 10.3390/ma13071783 |
| Online-Zugang: | Verlag, kostenfrei, Volltext: https://doi.org/10.3390/ma13071783 Verlag, kostenfrei, Volltext: https://www.mdpi.com/1996-1944/13/7/1783 
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| Verfasserangaben: | Nicholas A. Beckmann, Rudi G. Bitsch, Mareike Schonhoff, Klaus-Arno Siebenrock, Martin Schwarze, and Sebastian Jaeger |
MARC
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| 245 | 1 | 0 | |a Comparison of the primary stability of porous tantalum and titanium acetabular revision constructs |c Nicholas A. Beckmann, Rudi G. Bitsch, Mareike Schonhoff, Klaus-Arno Siebenrock, Martin Schwarze, and Sebastian Jaeger |
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| 520 | |a 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 | ||
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| 650 | 4 | |a hip arthroplasty | |
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