Three‐dimensional printing and porous metallic surfaces: A new orthopedic application

Melican, Mora C.; Zimmerman, Mark C.; Dhillon, Manu; Ponnambalam, Amrit R.; Curodeau, Alain; Parsons, J. Russell

doi:10.1002/1097-4636(200105)55:2<194::aid-jbm1006>3.3.co;2-b

Cited by 15 publications

(17 citation statements)

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“…The results which are presented in Ref. 13, showed that the 3-D printed texture designs had significantly greater failure stress and accelerated bone ingrowth as compared to standard sintered porous surfaces.…”

Section: Resultsmentioning

confidence: 99%

Design and fabrication of cast orthopedic implants with freeform surface textures from 3-D printed ceramic shell

Curodeau

Sachs

Caldarise

2000

J. Biomed. Mater. Res.

Self Cite

149

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Three-dimensional printing is a solid freeform fabrication process, which creates parts directly from a computer model. The parts are built by repetitively spreading a layer of powder and selectively joining the powder in the layer by ink-jet printing of a binder material. 3D printing was applied to the fabrication of sub-millimeter surface textures with overhang and undercut geometries for use in orthopedic prostheses as bony ingrowth structures. 3D printing is used to fabricate ceramic molds of alumina powder and silica binder, and these molds are used to cast the bony ingrowth surfaces of Co-Cr (ASTM F75) alloy. Minimum positive feature sizes of the ceramic mold and, therefore, minimum negative feature sizes of castings were determined to be approximately 200 x 200 x 175 microm and were limited by the strength of ceramic needed to withstand handling. Minimum negative feature sizes in the ceramic mold and, therefore, minimum positive features in the casting were found to be approximately 350 x 350 x 175 microm and were determined by limitations on removal of powder from the ceramic and the pressure required to fill these small features with molten metal during casting. Textures were designed with 5 layers of distinct geometric definition, allowing for the design of overhung geometry with overall porosity ranging from 30-70%. Features as small as 350 x 350 x 200 microm were included in these designs and successfully cast.

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Section: Resultsmentioning

confidence: 99%

Design and fabrication of cast orthopedic implants with freeform surface textures from 3-D printed ceramic shell

Curodeau

Sachs

Caldarise

2000

J. Biomed. Mater. Res.

Self Cite

149

View full text Add to dashboard Cite

show abstract

“…Recently a novel manufacturing process in the form of three-dimensional printing (3DP) has been used to create porous implants with controlled size, shape and distribution of the porosity [110,111]. 3DP is a rapid prototyping (RP) technology, used to create complex three-dimensional parts directly from a computer model of the part, with no need for tooling.…”

Section: Rapid Prototypingmentioning

confidence: 99%

Fabrication methods of porous metals for use in orthopaedic applications

2006

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“…The transcortical plug model is usually used to evaluate implant-bone mechanical and histological interactions [21,22,34,[36][37][38][39][40][41]. In this model, a short plug is inserted into a small hole in the cortex of animal's femur.…”

Section: Intramedullary Weight-bearing Modelmentioning

confidence: 99%

“…Various surface treatments to optimize bone ingrowth have been assessed [21]. Sintered beads, fibers, and other surface roughening treatments, such as metal arc spray [22], are now available.…”

Section: Introductionmentioning

confidence: 99%

“…Although pore obstruction does not occur on microtextured surfaces, such as grit-blasted surfaces or metal arc-sprayed surfaces [22], a true anchoring effect cannot be obtained on a microtextured surface. Application of macrotextured cast porous coatings [21,23,25] to knee prostheses has been tested, but the casting material is not strong enough to be applied to femoral stems [26].…”

Section: Introductionmentioning

confidence: 99%

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