tantalum/põletik

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Three-dimensional printed porous tantalum prosthesis for treating inflammation after total knee arthroplasty in one-stage surgery - a case report.

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Tantalum-based thin film coatings for wear resistant arthroprostheses.

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Cobalt-chromium-molybdenum alloys with high carbon content (HC-CoCrMo) are widely used as materials for arthroprosthesis, in particular in metal-on-metal (MoM) hip joints. In spite of their good wear and corrosion resistance, production of metallic wear particles and metal ion release will occur on

[Evaluation of osseointegration of domestic porous tantalum-niobium alloy].

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To evaluate the osseointegration of domestic porous tantalum-niobium(PTa-Nb) alloy.A total of 36 adult New Zealand rabbits were selected and divided into 3 groups. Pta-Nb rods(3.5 mm×10 mm) were implanted into the femoral condyle of each rabbit.The rabbits

Analysis of bone ingrowth on a tantalum cup.

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BACKGROUND Trabecular Metal (TM) is a new highly porous material made of tantalum (Zimmer, Warsaw, Indiana, USA). Its three-dimensional structure is composed of a series of interconnected dodecahedron pores that are on average 550 microm in diameter. This size is considered optimal for bone ingrowth

Experimental lumbar spine fusion with novel tantalum-coated carbon fiber implant.

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Implants of carbon fiber composite have been widely used in orthopedic and spinal surgeries. However, studies using carbon fiber-reinforced cages demonstrate frequent appearance of fibrous layer interposed between the implant and the surrounding bone. The aim of the present study was to test the

Complications associated with use of tantalum-mesh--covered implants.

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In 1948, ophthalmologists started implanting plastic spheres partially covered with tantalum mesh (eg, the Valley Forge Implant) in anophthalmic sockets. Numerous patients have developed complications ten to 15 years after surgery: pain ("pinching" or "deep"), headache, heavy mucopurulent discharge

Evaluation of a second-generation tantalum biliary stent in a canine model.

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OBJECTIVE To evaluate the safety and feasibility of use of a balloon-expandable tantalum (Tantaflex) stent in the biliary tree in a canine model. METHODS In this prospective, randomized trial, 10 tantalum stents were placed in eight dogs (two telescoping stents in two dogs), and six Wallstents were

Tantalum Boride as a biocompatible coating to improve osteogenesis of the bio-nano interface.

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A proper biological microenvironment conducive to tissue repair and regeneration, while the bio-implant interface directly affects the local microenvironment. In this study, to improve the biological microenvironment, a nano-sized tantalum boride (Ta-B) was coated on a titanium alloy substrate

Modification of inflammatory response to implanted biomedical materials in vivo by surface bound superoxide dismutase mimics.

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The healing response to implanted biomedical materials involves varying degrees and stages of inflammation and healing which in some cases leads to device failure. In this article, we describe synthetic methods and in vivo results of a novel surface treatment for biomedical materials involving

Relationship of vascular thrombosis and inflammatory leukocyte infiltration to neointimal growth following porcine coronary artery stent placement.

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BACKGROUND Superficial and intramural thrombosis are reproducible histopathological features of the porcine coronary oversized stent injury model. Fibrin and its degradation products are chemotactic for mononuclear leukocytes, and promote the proliferation and migration of vascular smooth muscle

Porous tantalum and tantalum oxide nanoparticles for regenerative medicine.

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For centuries, inflammatory/foreign body reactions have plagued the attempts of clinicians to use metals for tissue and bone reconstructions. Since corrosion contributes to the rejection of metal by the body, an extremely bioinert metal - tantalum - has been successfully used in medicine. The

Tantalum markers in radiography. An assessment of tissue reactions.

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The biocompatibility of two types of radiopaque tantalum markers was evaluated histologically. Reactions to pin markers (99.9% purity) and spherical markers (95.2% purity) were investigated after 3-6 weeks in rabbits and 5-48 weeks in children with abnormal growth. Both marker types were firmly

Improvement of biohistological response of facial implant materials by tantalum surface treatment.

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A compact passive oxide layer can grow on tantalum (Ta). It has been reported that this oxide layer can facilitate bone ingrowth in vivo though the development of bone-like apatite, which promotes hard and soft tissue adhesion. Thus, Ta surface treatment on facial implant materials may

Biocompatibility and osteogenesis of refractory metal implants, titanium, hafnium, niobium, tantalum and rhenium.

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To evaluate the biocompatibility of refractory metals, titanium, hafnium, niobium, tantalum and rhenium were implanted in rats, and histological observation and elemental mapping were performed by X-ray scanning analytical microscope (XSAM) and electron probe microanalyzer (EPMA). The titanium,

Peripheral Blood Stem Cell Therapy Does Not Improve Outcomes of Femoral Head Osteonecrosis with Cap-shaped Separated Cartilage Defect.

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A combination treatment with porous tantalum rod implantation and intra-arterial infusion of peripheral blood stem cells (PBSCs) provides promise for treating early and intermediate stages of osteonecrosis of the femoral head (ONFH). However, its clinical indications and application restrictions

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