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PubMed Journals Articles About "Brazil Orthopedic Bone Cement Casting Materials Market Outlook" RSS

19:49 EDT 20th March 2019 | BioPortfolio

Brazil Orthopedic Bone Cement Casting Materials Market Outlook PubMed articles on BioPortfolio. Our PubMed references draw on over 21 million records from the medical literature. Here you can see the latest Brazil Orthopedic Bone Cement Casting Materials Market Outlook articles that have been published worldwide.

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Showing "Brazil Orthopedic Bone Cement Casting Materials Market Outlook" PubMed Articles 1–25 of 12,000+

Bone Cement Implantation Syndrome: Key Concepts for Perioperative Nurses.

Bone cement implantation syndrome (BCIS) is a potentially fatal complication of orthopedic surgeries that use cement. The symptoms of BCIS occur primarily during femoral fracture repairs, but this complication has been reported in a wide variety of cemented procedures. Clinical presentation of this syndrome begins as a cascade with hypoxia and hypotension; if it is not reversed, it ends with right-sided heart failure and cardiac arrest. This syndrome usually occurs at cementation, prosthesis insertion, join...


Comparing Cementing Techniques in Total Knee Arthroplasty: An In Vitro Study.

Aseptic loosening remains to be a major reason for revision in total knee arthroplasty. Cement penetration of 2 to 5 mm increases the interface strength and consequently decreases the likelihood of loosening. But despite this overall accepted optimal cement penetration, there is still a wide variety of cementing techniques used in total knee arthroplasty. The purpose of this study was to evaluate two cementing techniques on the tibial and femoral sides, with regard to cement penetration. Five paired cadav...

Titania-containing bioactive bone cement for total hip arthroplasty in dogs.

We developed a composite cement containing low-content bioactive titania fillers dispersed among specific polymethylmethacrylate (PMMA) polymers and investigated the mechanical properties and bioactivity of this titania bone cement (TBC) under load-bearing conditions in cemented total hip arthroplasty (THA) in adult female beagles. TBC and PMMA bone cement (PBC) were compared using custom-made prostheses. The dogs were killed 1, 3, 6, and 12 months postoperatively. The acetabulum was harvested to evaluate t...


Characterization of polyurethane-based synthetic vertebrae for spinal cement augmentation training.

Vertebral augmentation techniques are used to stabilize impacted vertebrae. To minimize intraoperative risks, a solid education of surgeons is desirable. Thus, to improve education of surgeons as well as patient safety, the development of a high-fidelity simulator for the surgical training of cement augmentation techniques was initiated. The integrated synthetic vertebrae should be able to provide realistic haptics during all procedural steps. Synthetic vertebrae were developed, tested and validated with re...

Properties of vaterite-containing tricalcium silicate composited graphene oxide for biomaterials.

The properties of vaterite-containing tricalcium silicate (referred as V-C3S) bone cement can be significantly affected by graphene oxide (GO) added. The composited bone cement can overcome the problem of poor mechanical properties and low cellular activity of calcium silicate-based bone cement. The material properties, mineralization and cell compatibility were characterized. The results demonstrated that GO/V-C3S had good curing ability, mechanical properties and higher injectability. In general, V-C3S a...

Bone cement modeling for percutaneous vertebroplasty.

Vertebroplasty procedures provide a significant benefit for patients suffering from vertebral fractures. In order to address current issues of vertebroplasty procedures, an injection device able to control the bone cement viscosity has been developed. In addition, this device allows to protect the practitioner by removing him/her from the X-rays area. In this context, a study is first proposed to quantify the bone cement viscosity during its polymerization reaction on a rotational rheometer. These experimen...

Is Use of Bone Cement for Treatment of Second Metatarsal Stress Fractures Safe? A Case Report.

Metatarsal stress fractures are common injuries of the foot and can be a source of chronic pain without appropriate management. Conservative management is first line, but surgery may be indicated in athletes, cases of nonunion, and fractures of the fifth metatarsal. We report a case of a 34-year-old female who presented to clinic for intractable pain of the left foot secondary to a stress fracture of the left second metatarsal, which had been previously treated with injectable acrylic bone cement. Calcium s...

Experimental study of the application of a new bone cement loaded with broad spectrum antibiotics for the treatment of bone infection.

To evaluate the in vivo behaviour of a new bone cement loaded with antibiotics, in a rabbit bone infection model.

Calcium release and physical properties of modified carbonate apatite cement as pulp capping agent in dental application.

Carbonate apatite (COAp) and silica-calcium phosphate composite (SCPC) are bone substitutes with good prospect for dental application. SCPC creates a hydroxyapatite surface layer and stimulate bone cell function while, COAp induce apatite crystal formation with good adaptation providing good seal between cement and the bone. Together, these materials will add favorable properties as a pulp capping material to stimulate mineral barrier and maintain pulp vitality. The aim of this study is to investigate modif...

Histopathological Effects of Bone Cement on Cartilage Tissue.

Glass ionomer bone cement is frequently applied with cartilage grafts in otology, even as a single unit.

Antibiotic elution and mechanical property of TiO nanotubes functionalized PMMA-based bone cements.

To overcome the disadvantage of current antibiotic bone cements with low drug elution efficiency, the hollow nanostructured titanium-dioxide (TiO) nanotubes (TNTs) were formulated with antibiotic loaded bone cement to create nano diffusion networks, enabling enhanced release of antibiotic. By incorporation of TNTs into Poly(methyl methacrylate) (PMMA) based bone cement, more than 50% of loaded antibiotic (such as gentamicin or vancomycin) could be released in two months. As comparison, only about 5% of tota...

The role of secondary minerals in remediation of acid mine drainage by Portland cement.

To test the effects of secondary mineral formation on cement neutralisation of acid mine drainage (AMD), cement samples were leached with AMD and dilute sulfuric acid of approximately equal acidity. In both cases the neutralising efficiency of the cements, due to dissolution of portlandite as well as the hydrated calcium silicate and aluminate phases, decreased as secondary minerals accumulated on the cement surfaces. The AMD-leached cement became coated with Fe hydroxides, whereas the HSO-leached cement wa...

An interface damage model that captures crack propagation at the microscale in cortical bone using XFEM.

Reliable tools for fracture risk assessment are necessary to handle the challenge with an aging population and the increasing occurrence of bone fractures. As it is currently difficult to measure local damage parameters experimentally, computational models could be used to provide insight into how cortical bone microstructure and material properties contribute to the fracture resistance. In this study, a model for crack propagation in 2D at the microscale in cortical bone was developed using the extended fi...

Modulation Of Alendronate Release From A Calcium Phosphate Bone Cement: An In Vitro Osteoblast-Osteoclast Co-Culture Study.

In this study, we loaded a biomimetic calcium phosphate bone cement (CPC) with relatively high amounts of a bisphosphonate through the use of Solid Lipid Microparticles (MPs) and investigated bone cells response to the composite cements. 10, 20 and 30% w/w of Alendronate (AL) were successfully introduced into microparticles of Cutina HR and Precirol, which were prepared by means of spray-congealing technique. Addition of AL-loaded MPs to the cement composition provoked a lengthening of the setting and of th...

Improved response of osteoprogenitor cells to titanium plasma-sprayed PEEK surfaces.

Orthopedic implants benefit from a surface that encourages direct bony ongrowth (contact osteogenesis). This process is initiated as osteoprogenitor cells attach to the implant surface and deposit a calcium-enriched, collagen-deficient interfacial layer known as the cement line, which provides an anchoring foundation for the subsequent production of collagenous bone matrix from differentiated osteoblasts. Despite the importance of the cement line, the conditions affecting its deposition are incompletely und...

Effect of setting atmosphere on apatite cement resorption: An in vitro and in vivo study.

The aim of this present study was to investigate the effect of setting atmosphere on replacement of apatite cement with new bone both in vitro and in vivo.

Nanotechnology-enabled materials for hemostatic and anti-infection treatments in orthopedic surgery.

The hemostatic and anti-infection treatments in the field of orthopedics are always the pivotal yet challenging topics. In the first part of this review, synthesized or naturally derived nanoscale agents and materials for hemostatic treatment in orthopedic surgery are introduced. The hemostatic mechanisms and the safety concerns of these nanotechnology-enabled materials are discussed. Beside the materials to meet hemostatic needs in orthopedic surgery, the need for antimicrobial or anti-infection strategy i...

Back from the Dead. ACA Exchange Market Looking Healthy, Hale, and Competitive.

The brighter outlook for 2019 is what happens when the learning curve starts to flatten out. Remember, this market has only existed for five years. Margins over the past six months have exceeded even pre-ACA levels, and loss ratios reached new lows in the second quarter of 2018.

Magnesium phosphate based cement with improved setting, strength and cytocompatibility properties by adding Ca(HPO)·HO and citric acid.

Inorganic phosphate cements have become prevalent as bone filling materials in clinical applications, owing to beneficial properties such as self-setting, biodegradability and osteoconductivity. However, the further development of phosphate cements with higher strength and improved cytocompatibility is expected. In this paper, we reported the preparation of a novel magnesium phosphate based cement (MPBC), which has similar compositions with magnesium phosphate cement (MPC) but Ca(HPO)·HO and citric acid we...

Properties of reduced graphene/carbon nanotubes reinforced calcium phosphate bone cement in a microwave environment.

In this work, the setting process of reduced graphene (RGO)/carbon nanotubes (CNTs) reinforced calcium phosphate cement (CPC) were conducted in a microwave environment. The introduction of microwave can increase the reaction temperature, speed up the vibration of water molecules and eliminate bubbles from the interface between RGO, CNTs and the substrate. Comparing with CPC without microwave treatment, the final setting time of composites after microwave treatment are almost a half, the flexural strength an...

Metacarpal bone reconstruction by a cementless induced membrane technique.

Gunshot wounds to the hand often produce complex injuries and large segmental bone defects. Bone reconstruction remains a challenge in this context. The induced membrane technique is a simple and effective procedure for reconstruction of segmental bone defects. The technique is straightforward but must be performed rigorously. Usually polymethylmethacrylate (PMMA) cement is required for the first stage of the surgery. We describe four cases of metacarpal bone reconstruction after gunshot wounds in a limited...

Improving osteogenesis of calcium phosphate bone cement by incorporating with lysine: An in vitro study.

Calcium phosphate bone cement (CPC) has attracted extensive interests from surgeons and material scientists. However, its actual application is still limited because of its poor osteogenesis. In this work, lysine, one of the essential components of proteins, was incorporated into the CPC to improve its osteogenesis ability. Effects of lysine on the phase, morphology, physicochemical properties, protein adsorption, lysine release and cytocompatibility of CPC were investigated. Results showed that lysine had ...

A randomized comparison of bone-cement K-wire fixation vs plate fixation of shaft fractures of proximal phalanges.

The objective of this study (ClinicalTrials.gov ID: NCT03031015) is to compare the treatments of hand proximal phalanx shaft fractures with external-fixation technique using the combination of K-wires and bone-cement vs open reduction and internal fixation technique using a miniature plate and screw system.

Biomechanical Analysis of Augments in Revision Total Knee Arthroplasty.

Augments are a common solution for treating bone loss in revision total knee arthroplasty and industry is providing to surgeons several options, in terms of material, thickness and shapes. Actually, while the choice of the shape and the thickness is mainly dictated by the bone defect, no proper guidelines are currently available to select the optimal material for a specific clinical situation. Nevertheless, different materials could induce different bone responses and, later, potentially compromise implant ...

Simulated Body Fluid and the Novel Bioactive Materials Derived from it.

Professor Larry Hench first reported that certain glasses are able to spontaneously bond to living bone in 1970. This discovery stimulated research into new kinds of bone-bonding materials. However, there were no guiding principles for this purpose, and many animals were sacrificed in the effort to establish them. The present authors proposed in 1991 that the bone-bonding capacity of a material could be evaluated by examining apatite formation on its surface in an acellular simulated body fluid (SBF), witho...


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