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porous porous tantalum use

Porous tantalum: A new biomaterial in orthopedic surgery

Jan 01, 2018· Spine applications of the porous tantalum include their use in cervical and lumbar spine surgeries . 11.4.3.1. Use in cervical spine surgery. The first report on the use of porous tantalum for cervical interbody fusion came in the year 2003 . In this case an older type of porous material was used: Hedrocel in the form of Novus ring or block.

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The Use of Porous Tantalum in Complex Acetabular Revisions

Tantalum has been used in a variety of medical implants since the mid-1900's and is known to be relatively immunologically inert in vivo 3. However, porous tantalum is biologically active and animal studies have demonstrated bone ingrowth within porous tantalum structures 4,5. These studies have demonstrated histologically that there is

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Porous tantalum and tantalum oxide nanoparticles for

Porous materials have re-shaped the landscape of bone implants, as they allow for bone ingrowth and biological fixation, and eliminate implant loosening and related treatment failures. The unique bone-mimicking properties of porous tantalum enabled the use of tantalum as a material for bulk implants, and not only for coatings, as is the case

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Use of porous tantalum metaphyseal cones for severe tibial

Methods: Porous tantalum metaphyseal cones were implanted during fifteen revision total knee replacements in eight women and seven men who had an average age of 68.1 years at the time of the procedure. The patients had had an average of 3.5 prior total knee replacements.

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Primary human osteoblasts grow into porous tantalum and

Porous tantalum (Ta) has found application in orthopedics, although the interaction of human osteoblasts (HOB) with this material has not been reported. The aim of this study was to investigate the interaction of primary HOB with porous tantalum, using 5‐mm thick discs of porous tantalum. Comparison was made with discs of solid tantalum and

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Porous tantalum structures for bone implants: Fabrication

Aug 01, 2010· The development of porous tantalum is in its early stages of evolution, and in this work we have fabricated net shape, bulk porous Ta structures using high-power lasers in Laser Engineered Net Shaping (LENS™). The specific advantages of using laser processing in conjunction with LENS™ are: (i) the ability to control the melting of the high

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The Use of Porous Tantalum for Reconstructing Bone Loss in

Abstract. Porous tantalum, a novel biomaterial, was approved for use in orthopedic surgery by the Food and Drug Administration (FDA) in 1997. Several preclinical and experimental studies have demonstrated excellent biocompatibility with physical, mechanical, and tissue ingrowth properties conducive for enhanced osseointegration and superior structural integrity.

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Use of Porous Tantalum Metaphyseal Cones for Severe Tibial

METHODS: Porous tantalum metaphyseal cones were implanted during fifteen revision total knee replacements in eight women and seven men who had an average age of 68.1 years at the time of the procedure. The patients had had an average of 3.5 prior total knee replacements.

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Porous Tantalum and Titanium in Orthopedics: A Review

Porous metal is metal with special porous structures, which can offer high biocompatibility and low Young’s modulus to satisfy the need for orthopedic applications. Titanium and tantalum are the most widely used porous metals in orthopedics due to their excellent biomechanical properties and biocompatibility. Porous titanium and tantalum have been studied and applied for a long history until

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(PDF) Porous Tantalum in Orthopedic Surgery: An Answer or

Porous tantalum is an alternative metal for total joint arthroplasty components that offers several unique properties. Its high volumetric porosity (70% to 80%), low modulus of elasticity (3 MPa

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Primary human osteoblasts grow into porous tantalum and

Porous tantalum (Ta) has found application in orthopedics, although the interaction of human osteoblasts (HOB) with this material has not been reported. The aim of this study was to investigate the interaction of primary HOB with porous tantalum, using 5‐mm thick discs of porous tantalum. Comparison was made with discs of solid tantalum and

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Porous, non-porous tantalum cups yielded similar septic

Jun 07, 2018· BARCELONA, Spain — Use of porous tantalum cups after revision hip arthroplasty yielded low risks of septic and aseptic re-revision, which were similar to those obtained with non-porous tantalum

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Multicentre use of a porous tantalum monoblock acetabular

The friction coefficient of porous tantalum on bone is approximately twice that of other porous surfaced biomaterials. The average pore diameter of the porous tantalum shell is 550 μm and the polyethylene liner is compression moulded into the porous tantalum shell to a depth of 1–2 mm, thus leaving 2–3 mm of porous tantalum for tissue in

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Metaphyseal Sleeves and Cones in Revision Total Knee

Porous Tantalum Cones. The surgical technique for porous tantalum metaphyseal cones has previously been described [8, 27, 43, 44]. Once the surgeon has decided to use a metaphyseal cone, a trial intramedullary stem or reamer may be used to create the appropriate positioning of the cone.

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Tantalum Wikipedia

The high stiffness of tantalum makes it necessary to use it as highly porous foam or scaffold with lower stiffness for hip replacement implants to avoid stress shielding. Because tantalum is a non-ferrous, non-magnetic metal, these implants are considered to be acceptable for patients undergoing MRI procedures.

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Bone Ingrowth in Well-Fixed Retrieved Porous Tantalum Implants

For example, given 100 cm 3 of porous tantalum and porous beads, both having a bone volume fraction of 3%, the porous tantalum would have 2.25 cm 3 of bone (3%*0.75 average porosity), while the porous beads would have 1.2 cm 3 of bone (3%*0.4 average porosity). Currently, there is no standard method for bone ingrowth analysis, allowing for

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A single centre study of 41 cases on the use of porous

This study aims at investigating cup survival of porous tantalum revision cups and identifies risk factors for failure. We retrospectively reviewed 41 patients treated between 2010 and 2012. Main indications were aseptic loosening in 83% and two-stage exchange after periprosthetic joint infection in 17% of cases. Mean follow-up period was 72 months.

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Porous tantalum and tantalum oxide nanoparticles for

The unique bone-mimicking properties of porous tantalum enabled the use of tantalum as a material for bulk implants, and not only for coatings, as is the case with other porous metals. Moreover, porous tantalum also facilitates the ingrowth of soft tissue, including the formation of blood vessels that were found to assemble on the surface and

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Fibrous tissue ingrowth and attachment to porous tantalum

At 4, 8, and 16 weeks, the attachment strength to porous tantalum was 61, 71, and 89 g/mm respectively. Histologic analysis showed complete tissue ingrowth throughout the porous tantalum implant. Blood vessels were visible at the interface of and within the porous tantalum material. Tissue maturity and vascularity increased with time.

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Fabrication Methods of Porous Tantalum Metal Implants for

Porous tantalum, a new low modulus metal with a characteristic appearance similar to cancellous/trabecular bone, is currently available for use in several orthopedic applications (hip and knee

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