Merck

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

Sigma-Aldrich
Tantalum, powder, 60-100 mesh, 99.9%
Sigma-Aldrich
Tantalum, nanopowder, <25 nm particle size (BET), ≥99% trace metals basis
Sigma-Aldrich
Tantalum, powder, −325 mesh, 99.9% trace metals basis
Sigma-Aldrich
Tantalum, foil, thickness 0.05 mm, ≥99.9% trace metals basis
Tantalum, foil, 50x50mm, thickness 0.75mm, annealed, 99.9%
Tantalum, foil, 0.5m coil, thickness 0.009mm, 99.9%
Tantalum, foil, 100x100mm, thickness 0.25mm, annealed, 99.99%
Tantalum, foil, 0.5m coil, thickness 0.04mm, coil width .65mm, as rolled, 99.9%
Tantalum, foil, 0.2m coil, thickness 0.0075mm, 99.9%
Tantalum, foil, 50x50mm, thickness 0.125mm, annealed, 99.9%
Tantalum, foil, 10mm disks, thickness 0.015mm, 99.9%
Tantalum, foil, light tested, 50x50mm, thickness 0.01mm, 99.9%
Tantalum, foil, 25mm disks, thickness 0.0125mm, 99.9%
Tantalum, foil, light tested, 100x100mm, thickness 0.034mm, as rolled, 99.9%
Tantalum, foil, 15mm disks, thickness 0.25mm, annealed, 99.99%
Tantalum, foil, light tested, 100x100mm, thickness 0.03mm, as rolled, 99.9%
Tantalum, foil, light tested, 25x25mm, thickness 0.003mm, 99.9%
Tantalum, foil, light tested, 150x150mm, thickness 0.034mm, as rolled, 99.9%
Tantalum, foil, light tested, 25x25mm, thickness 0.01mm, 99.9%
Tantalum, foil, light tested, 25x25mm, thickness 0.02mm, 99.9%
Tantalum, rod, 500mm, diameter 2.0mm, annealed, 99.9%
Tantalum, foil, light tested, 100x100mm, thickness 0.02mm, 99.9%
Tantalum, foil, light tested, 25x25mm, thickness 0.015mm, 99.9%
Tantalum, foil, light tested, 100x100mm, thickness 0.025mm, as rolled, 99.9%
Tantalum, foil, light tested, 150x150mm, thickness 0.075mm, annealed, 99.9%
Tantalum, pellets, 100g, max. size 10mm, 99.9%
Tantalum, foil, not light tested, 25x25mm, thickness 0.0005mm, 99.9%
Tantalum, tube, 1000mm, outside diameter 0.31mm, inside diameter 0.19mm, wall thickness 0.06mm, as drawn, 99.9%
Tantalum, foil, not light tested, 25x25mm, thickness 0.001mm, 99.9%
Tantalum, tube, 100mm, outside diameter 8.7mm, inside diameter 8.34mm, wall thickness 0.18mm, as drawn, 99.9%