C N C R U S H E R

Use of Porous Tantalum Metaphyseal Cones for Severe Tibial ...

Indications for porous tantalum metaphyseal cones include patients with large contained or uncontained osseous defects that are typically categorized as Anderson Orthopaedic Research Institute ...

Characteristics of bone ingrowth and interface mechanics ...

interface mechanics of a new porous tantalum biomaterial J. D. Bobyn, G. J. Stackpool, S. A. Hacking, M. Tanzer, J. J. Krygier From the Montreal General Hospital and McGill University, Montreal, Canada We have studied the characteristics of bone ingrowth of a new porous tantalum biomaterial in a simple transcortical canine model using

Application of a novel porous tantalum implant in rabbit ...

A cubic porous tantalum (Ning Xia Orient Tantalum Industry Co. Ltd, Shizuishan, China) synthesized via 3dimensional knitted wire framework and CVD (length, width, and height of – mm; Figure 1A) was used in this study. The porosity was determined by the porous tantalum …

Technology of Porous Tantalum Production

Ionplasma sputtering and codeposition of ultrafine Ta and Cd particles on a moving substrate were used to prepare the solid solutions, in particular, the alloys with up to at.% Cd in the form of coatings. In vacuum heat treatment cadmium evaporates at 700°C from cadmium based solid solutions resulting in formation of a porous tantalum with a highly developed surface.

6 The following paper summarizes various factors ...

6 The following paper summarizes various factors associated with from BME 4814 at Worcester Polytechnic Institute

Use of Porous Tantalum Metaphyseal Cones for Severe Tibial ...

BACKGROUND: The best treatment method for large tibial bone defects during revision knee replacement has not been established. The purpose of this study was to determine the initial results obtained with a unique reconstructive implant, the porous tantalum metaphyseal cone, designed as an alternative treatment for severe tibial bone loss following total knee arthroplasty.

Direct comparison of additively manufactured porous ...

Porous titanium and tantalum structures were fabricated by additive manufacturing with 30% volume fraction designed porosity. • Nanotubes were formed on the surface of the porous titanium using anodization process (TNT). • Porous TNT and porous Ta showed comparable new bone formation as early as 5 weeks after surgery in a rat distal femur ...

Amit Bandyopadhyay Google Scholar Citations

This "Cited by" count includes citations to the following articles in Scholar. ... CSIRCentral Glass Ceramic Research Institute Verified email at Gary Fielding Washington State University Verified email at ... Porous tantalum structures for bone implants: fabrication, mechanical and in vitro biological properties.

In Vitro and in Vivo Study of 3DPrinted Porous Tantalum ...

Porous tantalum (Ta) scaffold is a novel implant material widely used in orthopedics including joint surgery, spinal surgery, bone tumor surgery, and trauma surgery. However, porous Ta scaffolds manufactured using the traditional method have many disadvantages.

Susmita Bose Google Scholar Citations

Their combined citations are counted only for the first article. ... DBT Ramalingaswami Fellow, CSIRCentral Glass Ceramic Research Institute Verified email at Sahar Vahabzadeh Assistant Professor, ... Porous tantalum structures for bone implants: fabrication, mechanical and in vitro biological properties.

Porous tantalum metaphyseal cones for severe tibial bone ...

Feb 04, 2015· Revisionfree survival of the tibial cone component was >95% at the time of the latest followup. Conclusions: Porous tantalum tibial cones offer a promising management option for severe tibial bone loss. At the intermediateterm followup (five to nine years), porous tantalum tibial cones had durable clinical results and radiographic fixation.

Metaphyseal Sleeves and Cones in Revision Total Knee ...

In 1999, Bobyn et al. [] studied cylindrical porous tantalum implants in a transcortical canine model .Two pore sizes (430 and 650 μm) were used, and the shear strength of the boneimplant interface was assessed. At 4 weeks postoperatively, the authors found the extent of filling of both the smaller and larger pores with new bone ranged from 40 to 50%, and by 16 and 52 weeks, the filling grew ...

(PDF) Porous tantalum and tantalum oxide nanoparticles for ...

Tantalumbased porous bioma for osseous tissue ingrowth. Porous tantalum is able to terial has already been shown to successfully aid in bone ingrowth in implants, but it has also shown prom ise in tissue regeneration. In one study in canines, tendons were surgically attached between porous tantalum washers (Reach et al. 2007).

Porous Tantalum Coatings Prepared by Vacuum Plasma ...

Porous Tantalum Coatings Prepared by Vacuum Plasma Spraying Enhance BMSCs Osteogenic Differentiation and Bone Regeneration In Vitroand In Vivo Ze Tang1,2, Youtao Xie3*, Fei Yang2, Yan Huang1, Chuandong Wang1, Kerong Dai1,2, Xuebin Zheng3, Xiaoling Zhang1,2* 1The Key Laboratory of Stem Cell Biology, Institute of Health Sciences, Shanghai Institutes for Biological Sciences (SIBS), …

Abdel vs. Lee: The Cementless Knee: An Emergent Game ...

The first prosthesis that was developed with the use of this material was a monoblock porous tantalum tibia. This is a single piece design with the polyethylene direct compression molded into the all porous tantalum base with interference fit achieved through the hexagonal pegs and fixation holes which are dimensionally smaller in size.

Design Rationale Smith Nephew

compared to porous tantalum when tested by the same The mean coefficient of friction for STIKTITE coating was higher than that of porous tantalum against both cancellous and cortical bone. These results indicate that STIKTITE coating should have superior friction, scratchfit feel and initial fixation stability as compared to porous ...

Porous tantalum and tantalum oxide nanoparticles for ...

Tantalum in vivo are still needed. Porous tantalum also has high stability and healing potential, as evidenced by hip, knee, and spine surgeries, as well as with foot and ankle surgery (Frigg et al. 2010). Prior to porous tantalum, autografts, allografts, and xenografts were the prime structural components

Tantalum coating of porous carbon scaffold supplemented ...

Tantalum coating of porous carbon scaffold supplemented with autologous bone marrow stromal stem cells for bone regeneration in vitro and in vivo. ... RVC and porous tantalum were produced by Institute of Metal Research, Chinese Academy of Sciences and Zhongshan Hospital of Dalian University, respectively. ... In porous tantalum rods with BMSCs ...

Anthony S Unger, | Johns Hopkins Medicine

Unger AS, Lewis RJ, Gruen T. "Evaluation of a porous tantalum uncemented acetabular cup in revision total hip arthroplasty: clinical and radiological results of 60 hips." J Arthroplasty. 2005 Dec;20(8):10029.

Zimmer Trabecular Metal Technology Home

Zimmer Trabecular Metal Technology has more than 15 years of clinical history, and the performance of specific components in human subjects has been welldocumented in 250+ peerreviewed journal articles and abstracts. 78 Independent studies have confirmed the structural and mechanical properties of Trabecular Metal material.. Consistent 3D tantalum structure similar to cancellous bone 1

Technology of Porous Tantalum Production

prepared tantalumbased materials assume the technological application of the investigation results. Keywords Tantalum, Cadmium, Porous Structures, Specific Surface 1. Introduction The methods for preparing of porous metals, known to date, are multistaged and complicated [2][1]. The a u

Additively manufactured porous tantalum implants ...

Mar 01, 2015· The architecture of the porous structure in combination with the material properties of tantalum result in mechanical properties close to those of human bone and allow for bone ingrowth. The bone regeneration performance of the porous tantalum was evaluated in vivo using an orthotopic loadbearing bone defect model in the rat femur.

Modeling and Characterization of Porous Tantalum Scaffolds ...

Jan 22, 2019· In this work, porous tantalum scaffolds (having porosity up to ~ 71%) were prepared via space holder technique at a lower sintering temperature of 1300 °C. Depending on the amount of porosity, the elastic modulus, yield and compressive strength of porous tantalum scaffolds were found to vary in the range of 1–7 GPa, 4–11 MPa and 22–30 ...

Use of porous tantalum metaphyseal cones for severe tibial ...

Background: The best treatment method for large tibial bone defects during revision knee replacement has not been established. The purpose of this study was to determine the initial results obtained with a unique reconstructive implant, the porous tantalum metaphyseal cone, designed as an alternative treatment for severe tibial bone loss following total knee arthroplasty.

Are porous tantalum cups superior to conventional ...

Background and purpose— Porous tantalum cups have been introduced as an alternative to various reinforcement rings in revision hip hypothesized that porous tantalum cups would be superior to Müller acetabular roof reinforcement rings (MARRs) in revision hip surgery with rerevision for aseptic loosening as the primary outcome measure.

Osseous integration in porous tantalum implants

Porous tantalum is a relatively new biomaterial in orthopedics, used in domains such as hip and knee arthroplasty, hip osteonecrosis surgery, and spine surgery. 1 It consists of a carbon scaffold on which pure tantalum is deposited. 2,3 Porous tantalum possesses some unique mechanical properties, 4 – …

Total Joint Center Research in RI | Lifespan

The article titled “Minimum FiveYear Outcomes with Porous Tantalum Acetabular Cup and Augment Construct in Complex Revision Total Hip Arthroplasty” was Published in May 2017. “The good work that we all are doing here at the Total Joint Center for our patients is getting noticed on the National level.

(PDF) Failure of Porous Tantalum Cervical Interbody Fusion ...

Failure of Porous Tantalum Cervical Interbody Fusion Devices Twoyear Results From a Prospective, Randomized, Multicenter Clinical Study

Stable, LowESR Tantalum Capacitors

The majority of surface mount tantalum chip capacitors are manufactured in roughly the following manner: (1) tantalum powder is compacted into a slug and then sintered to achieve a porous body of around 50% theoretical density. A tantalum wire is either pressed into the slug prior to sintering or is buttwelded to the slug after some degree of ...

Bone response to porous tantalum implants in a gap‐healing ...

Jan 12, 2019· Implants containing porous tantalum demonstrated increased peri‐implant bone formation within this gap‐healing model as shown by significant differences in biomechanical and histomorphometric outcomes. Such implants may represent an alternative to influence bone healing in surgical sites with an existing gap.

Design of Porous Silica Supported Tantalum Oxide Hollow ...

Silicasupported tantalum oxide (ST) hollow spheres were designed for photocatalytic applications in the UV range of to eV. These nanostructures with a variable diameter of 100–250 nm and shell thickness of 24–58 nm were obtained by the hydrothermal treatment of tantalum isopropoxide and tetraethylorthosilicate at 120 °C for 48 h in the presence of cetyl trimethyl ammonium bromide ...

Porous Tantalum Cones for Large Metaphyseal Tibial Defects ...

required the use of a porous tantalum cone for tibial From the Insall Scott KellyR Institute of Orthopaedics and Sports Medicine, New York, New York. Submitted March 24, 2008; accepted August 23, 2008. One of the authors is a consultant for Zimmer Inc. Implex, Warsaw, IN, USA. Reprint requests: William J. Long, MD, FRCSC, Attending

Porous tantalum and tantalum oxide nanoparticles for ...

title = "Porous tantalum and tantalum oxide nanoparticles for regenerative medicine", abstract = "For centuries, inflammatory/foreign body reactions have plagued the attempts of clinicians to use metals for tissue and bone reconstructions.