Results 191 to 200 of about 3,615 (219)

Modeling and Characterization of Porous Tantalum Scaffolds

Transactions of the Indian Institute of Metals, 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 MPa, respectively.
Vignesh Raja Sukumar, Brahma Raju Golla, Mahammad Ali Shaik, Ankit Yadav, Sarath Chandra Dongari Taraka, Shivkumar Khaple   +5 more
openaire   +1 more source

Formation of porous α tantalum in films

Technical Physics, 2015
Ta—Cd alloys in the form of coatings with up to 66.2 at % Cd are fabricated for the first time by ion-plasma sputtering and the subsequent codeposition of ultradispersed Ta and Cd particles. At a concentration higher than 44.0 at % Cd, tetragonal β-Ta transforms into bcc α-Ta.
Yu. Zh. Tuleushev, V. N. Volodin, A. R. Brodskii   +2 more
openaire   +1 more source

Porous Tantalum in Reconstructive Surgery of the Knee – A Review

The Journal of Knee Surgery, 2010
Porous tantalum represents an alternative metal for primary and revision total knee arthroplasty (TKA) with several unique properties. Tantalum is a transition metal, which in its bulk form has shown excellent biocompatibility and is safe to use in vivo as evidenced by its current application in pacemaker electrodes, cranioplasty plates, and as ...
Brett, Levine, Scott, Sporer, Craig J, Della Valle, Joshua J, Jacobs, Wayne, Paprosky   +4 more
openaire   +2 more sources

Structure, metallurgy, and mechanical properties of a porous tantalum foam

Journal of Biomedical Materials Research, 2001
This study evaluated a porous tantalum biomaterial (Hedrocel) designed to function as a scaffold for osseous ingrowth. Samples were characterized for structure, Vickers microhardness, compressive cantilever bending, and tensile properties, as well as compressive and cantilever bending fatigue.
L D, Zardiackas, D E, Parsell, L D, Dillon, D W, Mitchell, L A, Nunnery, R, Poggie   +5 more
openaire   +2 more sources

Successful Canine Patellar Tendon Reattachment to Porous Tantalum

Clinical Orthopaedics & Related Research, 2007
The ability to achieve reattachment of soft tissues, such as tendon, directly onto a prosthetic surface would be of great benefit in case of periarticular bone loss or resection. Bone and potential soft tissue ingrowth using porous tantalum has been observed in prior animal studies.
Ari, Itälä, Andras, Heijink, Taninnit, Leerapun, John S, Reach, Kai-Nan, An, David G, Lewallen   +5 more
openaire   +2 more sources

Porous tantalum shells and augments for acetabular cup revisions

European Journal of Orthopaedic Surgery & Traumatology, 2013
The purpose of this study was to evaluate early functional results of revision hip arthroplasty with pelvic bone loss revised with porous tantalum (PT) acetabular components.Twenty-five consecutive patients (25 hips) with loose acetabular components after total hip arthroplasty with a minimum of Paprosky IIa pelvic bone loss treated with PT cups with ...
Andrej, Moličnik, Marko, Hanc, Gregor, Rečnik, Zmago, Krajnc, Mitja, Rupreht, Samo K, Fokter   +5 more
openaire   +2 more sources

Porous Tantalum as a Structural Graft in Foot and Ankle Surgery

Foot & Ankle International, 2012
Background: Structural bone grafts are often used in foot and ankle surgery to fill gaps, maintain height, length or correction. Bone graft, whether autograft or allograft, has limitations and disadvantages. With porosity and mechanical properties similar to native bone, porous tantalum has been used successfully in hip and knee applications.
Bernard H, Sagherian, Richard J, Claridge   +1 more
openaire   +2 more sources

Early aseptic loosening of a porous tantalum knee prosthesis

MUSCULOSKELETAL SURGERY, 2009
Porous tantalum represents a relatively new solution for primary and revision total knee arthroplasty, offering several unmatched properties. Tantalum is a transition metal, with excellent biocompatibility and bioactivity due to its intrinsic physical and structural characteristics.
D, Tigani, G, Sabbioni, A, Raimondi
openaire   +2 more sources

Direct Tendon Attachment and Healing to Porous Tantalum

The Journal of Bone and Joint Surgery-American Volume, 2007
The ability to directly attach soft-tissue to metal would have broad clinical application. Previous attempts to obtain normal tendon-to-bone attachment strength have been unsuccessful. In the present study, we hypothesized that when the initial interface mechanical environment is carefully controlled, a highly porous form of tantalum metal would allow ...
John S, Reach, Ian D, Dickey, Mark E, Zobitz, Julie E, Adams, Sean P, Scully, David G, Lewallen   +5 more
openaire   +2 more sources

Application of Porous Tantalum in Osteonecrosis of the Femoral Head

Science of Advanced Materials, 2021
Biomaterials were used in the repair and treatment of avascular necrosis of femoral head (ANFH), which has made a high clinical and social value for preserving the patient’s own hip joint function. Among them, the porous tantalum (pTa) rod support technology is a minimally invasive surgical treatment for ANFH that has been applied in recent years.
openaire   +1 more source