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Porous tantalum in hip and knee reconstructive surgery.

Porous tantalum in hip and knee reconstructive surgery.

Journal of biomedical materials research. Part B, Applied biomaterials (2008-10-08)

Nilesh Patil, Kevin Lee, Stuart B Goodman

ABSTRACT

Conventional porous-coated joint prostheses used in hip and knee reconstruction have demonstrated good clinical results, however, these implants possess some inherent shortcomings such as low volumetric porosity, suboptimal frictional characteristics, and higher modulus of elasticity relative to that of bone. Porous tantalum, a novel porous biomaterial was developed to address these limitations. Extensive laboratory studies have revealed that porous tantalum has physical, mechanical and tissue in growth properties that makes it a potentially improved biomaterial particularly in complex joint reconstructions. Porous tantalum is a highly porous biomaterial with good biocompatibility, excellent corrosion resistance, and high coefficient of friction. The short term clinical results of porous tantalum in primary hip, revision hip, and knee reconstructive surgery are encouraging but further studies will be needed to determine whether the theoretical advantages of porous tantalum can provide long term biological fixation and stability. This review presents the biomaterial properties and clinical results of porous tantalum devices in hip and knee reconstructive surgeries.

MATERIALS

Product Number

Brand

Product Description

Sigma-Aldrich

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

Sigma-Aldrich

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

Sigma-Aldrich

Tantalum, powder, 60-100 mesh, 99.9%

Tantalum, foil, 10mm disks, thickness 0.03mm, as rolled, 99.9%

Tantalum, foil, 0.2m coil, thickness 0.1mm, coil width .62mm, as rolled, 99.9%

Tantalum, foil, 50x50mm, thickness 0.5mm, annealed, 99.9%

Tantalum, foil, 10m coil, thickness 0.03mm, coil width 0.75mm, annealed, 99.9%

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

Tantalum, foil, 10mm disks, thickness 0.0075mm, 99.9%

Tantalum, foil, 10mm disks, thickness 0.0125mm, 99.9%

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

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

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

Tantalum, foil, 6mm disks, thickness 0.009mm, 99.9%

Tantalum, foil, not light tested, 25x25mm, thickness 0.001mm, 99.9%

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

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

Tantalum, foil, 6mm disks, thickness 0.0125mm, 99.9%

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

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

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

Tantalum, foil, light tested, 25x25mm, thickness 0.006mm, 99.9%

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

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

Tantalum, foil, 6mm disks, thickness 0.015mm, 99.9%

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

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

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

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

Tantalum, rod, 1000mm, diameter 1.0mm, 99.9%