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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

摘要

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.

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Sigma-Aldrich

钽, powder, 99.99% trace metals basis

Sigma-Aldrich

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

Sigma-Aldrich

钽, foil, thickness 0.025 mm, ≥99.9% trace metals basis

Sigma-Aldrich

钽, foil, thickness 0.25 mm, ≥99.9% trace metals basis

Sigma-Aldrich

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

Sigma-Aldrich

钽, powder, 60-100 mesh, 99.9%

Sigma-Aldrich

钽, wire, diam. 1.0 mm, ≥99.9% trace metals basis

Sigma-Aldrich

钽, foil, thickness 0.5 mm, ≥99.9% trace metals basis

钽, foil, 100x100mm, thickness 0.125mm, annealed, 99.9%

Sigma-Aldrich

钽, foil, thickness 1.0 mm, ≥99.9% trace metals basis

钽, wire reel, 1m, diameter 0.8mm, annealed, 99.9%

钽, sphere, 100pcs, diameter 1.0mm, precision sphere grade, 99.9%

钽, foil, 100x100mm, thickness 0.100mm, annealed, 99.9%

钽, mesh, 100x100mm, nominal aperture 0.43mm, wire diameter 0.075mm, 50x50 wires/inch, open area 72%, plain weave mesh

钽, wire reel, 0.5m, diameter 0.8mm, annealed, 99.9%

钽, foil, 50x50mm, thickness 6.0mm, 99.9%

钽, foil, 150x150mm, thickness 0.100mm, annealed, 99.9%

钽, foil, 1m coil, thickness 0.04mm, coil width 1mm, annealed, 99.9%

钽, rod, 200mm, diameter 1.0mm, 99.9%

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

钽, rod, 500mm, diameter 5.0mm, annealed, 99.9%

钽, rod, 100mm, diameter 5.0mm, annealed, 99.9%

钽, wire reel, 20m, diameter 0.025mm, as drawn, 99.9%

钽, foil, 1m coil, thickness 0.1mm, coil width .62mm, as rolled, 99.9%

钽, pellets, 50g, max. size 10mm, 99.9%

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

钽, rod, 200mm, diameter 12.7mm, annealed, 99.9%

钽, rod, 25mm, diameter 18mm, annealed, 99.9%

钽, rod, 500mm, diameter 1.5mm, annealed, 99.9%

钽, wire reel, 2m, diameter 0.025mm, as drawn, 99.9%