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A porous tantalum trabecular metal: basic science.

A porous tantalum trabecular metal: basic science.

American journal of orthopedics (Belle Mead, N.J.) (2002-05-15)

Robert Cohen

ABSTRACT

Conventional materials used for orthopedic reconstruction implants limit the design of new and improved implants. Solid metal is rigid. Porous fixation surfaces have low volumetric porosity available for biologic ingrowth and low frictional characteristics for initial implant stability and have to be bonded to solid-metal substrates. New porous structural biomaterials have been developed to help advance the current generation of prostheses and address unresolved clinical applications. Tantalum trabecular metal offers several advantages over other current conventional materials used for implants by its uniformity and structural continuity, strength, low stiffness, high porosity, and high coefficient of friction.

MATERIALS

Product Number

Brand

Product Description

Sigma-Aldrich

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

Sigma-Aldrich

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

Sigma-Aldrich

Tantalum, powder, 60-100 mesh, 99.9%

Tantalum, foil, 15mm disks, thickness 0.125mm, annealed, 99.9%

Tantalum, foil, 10mm disks, thickness 0.15mm, annealed, 99.9%

Tantalum, foil, 4mm disks, thickness 0.009mm, 99.9%

Tantalum, foil, 1m coil, thickness 0.015mm, 99.9%

Tantalum, foil, 15mm disks, thickness 0.015mm, 99.9%

Tantalum, foil, 4mm disks, thickness 0.75mm, annealed, 99.9%

Tantalum, foil, 8mm disks, thickness 0.025mm, as rolled, 99.9%

Tantalum, foil, 6mm disks, thickness 0.02mm, 99.9%

Tantalum, foil, not light tested, 50x50mm, thickness 0.002mm, 99.9%

Tantalum, foil, 8mm disks, thickness 0.02mm, 99.9%

Tantalum, mesh, 40x40mm, nominal aperture 0.43mm, wire diameter 0.075mm, 50x50 wires/inch, open area 72%, plain weave mesh

Tantalum, foil, not light tested, 25x25mm, thickness 0.004mm, 99.9%

Tantalum, foil, 8mm disks, thickness 0.25mm, annealed, 99.99%

Tantalum, foil, not light tested, 50x50mm, thickness 0.003mm, 99.9%

Tantalum, foil, light tested, 50x50mm, thickness 0.006mm, 99.9%

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

Tantalum, foil, light tested, 50x50mm, thickness 0.0075mm, 99.9%

Tantalum, foil, light tested, 50x50mm, thickness 0.034mm, as rolled, 99.9%

Tantalum, foil, not light tested, 100x100mm, thickness 0.003mm, 99.9%

Tantalum, foil, light tested, 25x25mm, thickness 0.015mm, 99.9%

Tantalum, foil, not light tested, 100x100mm, thickness 0.01mm, 99.9%

Tantalum, foil, 10mm disks, thickness 0.015mm, 99.9%

Tantalum, foil, light tested, 50x50mm, thickness 0.01mm, 99.9%

Tantalum, foil, light tested, 25x25mm, thickness 0.01mm, 99.9%

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

Tantalum, foil, not light tested, 25x25mm, thickness 0.003mm, 99.9%

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