Applications of porous tantalum in total hip arthroplasty.

Applications of porous tantalum in total hip arthroplasty.

The Journal of the American Academy of Orthopaedic Surgeons (2006-11-02)

Brett Levine, Craig J Della Valle, Joshua J Jacobs

ABSTRACT

Porous tantalum is an alternative metal for total joint arthroplasty components that offers several unique properties. Its high volumetric porosity (70% to 80%), low modulus of elasticity (3 MPa), and high frictional characteristics make it conducive to biologic fixation. Tantalum has excellent biocompatibility and is safe to use in vivo. The low modulus of elasticity allows for more physiologic load transfer and relative preservation of bone stock. Because of its bioactive nature and ingrowth properties, tantalum is used in primary as well as revision total hip arthroplasty components, with good to excellent early clinical results. In revision arthroplasty, standard and custom augments may serve as a structural bone graft substitute. Formation of a bone-like apatite coating in vivo affords strong fibrous ingrowth properties and allows for substantial soft-tissue attachment, indicating potential for use in cases requiring reattachment of muscles and tendons to a prosthesis. Development of modular components and femoral stems also is being evaluated. The initial clinical data and basic science studies support further investigation of porous tantalum as an alternative to traditional implant materials.

MATERIALS

Product Number

Brand

Product Description

692824

Sigma-Aldrich

Tantalum, powder, 60-100 mesh, 99.9%

357243

Sigma-Aldrich

Tantalum, foil, thickness 0.05 mm, ≥99.9% trace metals basis

262846

Sigma-Aldrich

Tantalum, powder, −325 mesh, 99.9% trace metals basis

GF79543110

Tantalum, foil, light tested, 150x150mm, thickness 0.075mm, annealed, 99.9%

GF80066392

Tantalum, pellets, 100g, max. size 10mm, 99.9%

GF98666230

Tantalum, foil, light tested, 150x150mm, thickness 0.03mm, as rolled, 99.9%

GF52742099

Tantalum, foil, light tested, 100x100mm, thickness 0.034mm, as rolled, 99.9%

GF33704142

Tantalum, foil, not light tested, 100x100mm, thickness 0.009mm, 99.9%

GF19254472

Tantalum, foil, not light tested, 25x25mm, thickness 0.0005mm, 99.9%

GF24352028

Tantalum, rod, 100mm, diameter 6.35mm, annealed, 99.9%

GF83507238

Tantalum, foil, light tested, 100x100mm, thickness 0.03mm, as rolled, 99.9%

GF98156144

Tantalum, foil, not light tested, 25x25mm, thickness 0.0015mm, 99.9%

GF15979494

Tantalum, foil, light tested, 50x50mm, thickness 0.075mm, annealed, 99.9%

GF64195780

Tantalum, tube, 1000mm, outside diameter 8.7mm, inside diameter 8.34mm, wall thickness 0.18mm, as drawn, 99.9%

GF55545149

Tantalum, foil, light tested, 25x25mm, thickness 0.02mm, 99.9%

GF87514421

Tantalum, rod, 50mm, diameter 12.7mm, annealed, 99.9%

GF26860787

Tantalum, tube, 100mm, outside diameter 2.1mm, inside diameter 1.6mm, wall thickness 0.25mm, as drawn, 99.9%

GF65369324

Tantalum, foil, light tested, 100x100mm, thickness 0.05mm, annealed, 99.9%

GF15129817

Tantalum, foil, not light tested, 50x50mm, thickness 0.01mm, 99.9%

GF90076989

Tantalum, foil, not light tested, 50x50mm, thickness 0.0015mm, 99.9%

GF38737929

Tantalum, pellets, 20g, max. size 10mm, 99.9%

GF37455970

Tantalum, tube, 100mm, outside diameter 0.31mm, inside diameter 0.19mm, wall thickness 0.06mm, as drawn, 99.9%

GF35432221

Tantalum, rod, 50mm, diameter 10.0mm, annealed, 99.9%

GF42703332

Tantalum, rod, 200mm, diameter 1.5mm, annealed, 99.9%

GF64866202

Tantalum, foil, not light tested, 82x100mm, thickness 0.006mm, 99.9%

GF23427873

Tantalum, tube, 100mm, outside diameter 3.0mm, inside diameter 2mm, wall thickness 0.5mm, as drawn, 99.9%

GF84327510

Tantalum, foil, not light tested, 25x25mm, thickness 0.01mm, 99.9%

GF49325643

Tantalum, tube, 1000mm, outside diameter 1.05mm, inside diameter 0.65mm, wall thickness 0.2mm, as drawn, 99.9%

GF29028405

Tantalum, rod, 100mm, diameter 10.0mm, annealed, 99.9%

GF28826152

Tantalum, rod, 50mm, diameter 18mm, annealed, 99.9%