Orthopedic Prostheses
Mostrando 1-11 de 11 artigos, teses e dissertações.
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1. Caracterização de polivinilálcool e polivinilpirrolidona (PVAI/PVP) para reparo de cartilagem articular mandibular / Characterization of polyvinylalcohol and polyvinylpyrrolidone (PVAI/PVP) for repair of articular carlilage mandibular
Na área médica, para se desenvolver um dispositivo que funcione como implante, deve-se utilizar materiais que sejam compatíveis para funções específicas do corpo humano, e esses são classificados como biomateriais. Neste trabalho, foram determinados os parâmetros que serão aplicados ao laser de infravermelho (condutividade térmica do material, dens
Publicado em: 2011
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2. Analysis of the growth pattern of Vero cells cultured on dense and porous poly (L-Lactic Acid) scaffolds
Poly (L-lactic acid) (PLLA) polymers are the most frequently used substrates for cell culture, tissue regeneration and orthopedic prostheses, mainly because of their atoxic characteristics and good biocompatibility. The objective of this study was to evaluate whether a higher density or different pore diameters (less than 45, 180-250, and 250-350 µm) would
Materials Research. Publicado em: 2009-09
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3. Correlação entre transformações de fases e comportamento mecanico de ligas Ti-Nb-Sn e sua aplicação na concepção de implantes ortopedicos com propriedades otimizadas / Correlation between phase transformations and mechanical behavior of Ti-Nb-Sn alloys and its applications in the design of orthopedic implants with optimized characteristics
β type Ti alloys exhibit versatility in terms of mechanical properties, which can be tailored by using specific heat treatment conditions. In this work, Ti-Nb-Sn alloy samples were prepared, processed and characterized, aiming to produce femoral stems of total hip prostheses. The research included evaluations of phase transformations during heat treatme
Publicado em: 2009
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4. Analysis of the microbial load in the instruments used in orthopedic surgeries / Análise da carga microbiana nos instrumentos utilizados em cirurgias ortopédicas
The failure in orthopedic surgical procedures due to infection can lead to devastating consequences such as the loss of implanted prostheses. Hospital infection is an outcome with a multifactorial cause, in which the safe sterilization of the surgical instruments has an extremely important role. To date, it is not known what microbiological challenges the Ma
Publicado em: 2009
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5. Desenvolvimento de métodos construtivos e de novos materiais empregados na confecção de cartuchos de próteses de membros inferiores
A fabricação de próteses para amputados de membros inferiores (transfemural e transtibial) exige a confecção de um cartucho com encaixe adequado e personalizado ao perfil de cada paciente. O processo tradicional de atendimento a pacientes, principalmente, em hospitais públicos no Brasil, inicia-se com o preenchimento de uma ficha onde são identificado
Publicado em: 2008
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6. Performance evaluation in implants of polyethylene and tricalcium phosphate, covered by hydrogels, in osteochondral defects in dogs knees / Avaliação do desempenho de implantes de polietileno e de fosfato tricalcio, recobertos por hidrogel, em defeitos osteocondrais no joelho de cães
Este estudo teve como objetivo avaliar o desempenho in vivo, de implantes cilíndricos com altura e diâmetro de 5mm formados por cerâmica ?-tricálcio fosfato (?-TCP) ou polietileno de ultra-alto peso molecular (PEUAPM) todos recobertos com hidrogel de poli (2-hidroxi etil metacrilato) - poli(metacrilato de metila-co-ácido acrílico) (75:25) (pHEMA/poli (
Publicado em: 2007
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7. Calcium phosphate formation on alkali-treated titanium alloy and stainless steel
Alternatives to the plasma spraying method have been developed to obtain calcium phosphate coatings, like the biomimetic method. This process is a physicochemical method in which a substrate is soaked in a solution that simulates the physiological conditions, for a period of time enough to form a desirable layer of the calcium phosphate on the substrate. The
Materials Research. Publicado em: 2004-06
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8. Treatment of Pseudomonas aeruginosa-infected orthopedic prostheses with ceftazidime-ciprofloxacin antibiotic combination.
Indwelling device infections are associated with considerable morbidity and extremely high cost. Pseudomonas aeruginosa is the most frequent gram-negative etiologic agent associated with infections of indwelling catheters and foreign body implants. It is generally agreed that eradication of infection in the presence of a foreign body requires removal of the
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9. Oral rifampin plus ofloxacin for treatment of Staphylococcus-infected orthopedic implants.
We examined the effectiveness and safety of the combination of rifampin plus ofloxacin given orally for treating prosthetic orthopedic implants infected with staphylococci. The prospective cohort study was conducted in a referral public hospital with ambulatory care services between 1985 and 1991. Consecutive patients from whom Staphylococcus organisms susce
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10. Human isolates of Staphylococcus caprae: association with bone and joint infections.
Staphylococcus caprae is a coagulase-negative, DNase-positive member of the genus Staphylococcus usually associated with goats, but since 1991 a few laboratories have reported isolating the organism from human clinical specimens. We report on the isolation of 14 strains from human specimens and note that 10 strains were obtained from patients with bone and j
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11. Efficacy of Teicoplanin and Autoradiographic Diffusion Pattern of [14C]Teicoplanin in Experimental Staphylococcus aureus Infection of Joint Prostheses
Prosthesis infections are difficult to cure. Infection with methicillin-resistant staphylococci is becoming more common in patients with orthopedic implants. Using a recently developed model of methicillin-resistant Staphylococcus aureus (MRSA) infection of a knee prosthesis, we compared the efficacies of teicoplanin and vancomycin. [14C]teicoplanin diffusio
American Society for Microbiology.