Orthopedic Implants
Mostrando 1-12 de 46 artigos, teses e dissertações.
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1. Alumina applied in bone regeneration: Porous α-alumina and transition alumina
Abstract Alumina is a polymorphic bioceramic that has been extensively investigated for application in bone regeneration. Dense α-alumina has been considered a suitable biomaterial for dental and orthopedic implants due to its superior mechanical properties. However, its use is limited due to its high inertia in a biological environment. Recent investigatio
Cerâmica. Publicado em: 2022
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2. Factors Influencing the Outcome of Osteosynthesis in the Fracture of the Femoral Neck in Young Adult Patients
Resumo Objetivos Avaliar os fatores que influenciam o resultado da osteossíntese pela redução fechada da fratura do colo femoral nos pacientes jovens. Métodos Foi feito um estudo retrospectivo com revisão dos dados dos pacientes operados em um hospital ortopédico de grande porte, de 2003 a 2011, com um total de 81 pacientes que atenderam aos crité
Rev. bras. ortop.. Publicado em: 07/10/2019
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3. HYDROXYAPATITE - CARBON NANOTUBE COMPOSITES FOR DRUG DELIVERY APPLICATIONS
Abstract The aim of this study was the synthesis of composites containing hydroxyapatite (Hap) or silicon substituted hydroxyapatite (HapSi), carboxyl functionalized carbon nanotubes (fMWCNT) and gelatin (G) in different ratios. Ibuprofen (IBU) was chosen as a model drug for the formulation of extended-release dosage forms. The obtained composites were chara
Braz. J. Chem. Eng.. Publicado em: 30/09/2019
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4. Lower Susceptibility of Laser-irradiated Ti-15Mo Surface to Methicillin-resistant Staphylococcus aureus Cells Adhesion
Extensive data reported the influence of the physicochemical properties on the bacterial adhesion in biomaterials, of which surface roughness of titanium (Ti) can dictates methicillin-resistant Staphylococcus aureus (MRSA) adhesion to orthopedic implants. Herein, we investigated the influence of the Yb:YAG laser texturing of titanium-15molybdenum (TiMo-L) su
Mat. Res.. Publicado em: 23/09/2019
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5. PEEK Physical Surface Modification: Evaluation Of Particles Leaching Process
Polyetheretherketone (PEEK) has been prominent in orthopedic implants; however, it is inert, preventing interaction between the implant and adjacent bone tissues. One way to overcome this characteristic is physical modification its on surface by particle leaching promoting greater osseointegration. The objective of this research was to develop and characteri
Mat. Res.. Publicado em: 14/02/2019
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6. Semi-solid Sintering of Ti6Al4V/CoCrMo Composites for Biomedical Applications
A composite of Ti6Al4V reinforced with CoCrMo particles is fabricated by conventional powder metallurgy and semi-solid sintering. Composites are fabricated by mixing 20% wt. of CoCrMo reinforcing particles into the Ti6Al4V matrix. Sintering is studied by dilatometry tests between 1050 and 1130 °C and compact characterization is performed by SEM and XRD. Mic
Mat. Res.. Publicado em: 31/01/2019
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7. Microstructure and Mechanical Properties of Ti-12Mo-8Nb Alloy Hot Swaged and Treated for Orthopedic Applications
Metastable β-type Ti alloys with non-toxic addition elements such as Mo, Zr, Sn, Ta and Nb were developed as an alternative to the widely used Ti-6Al-4V alloy for biomedical applications. These alloys possess enhanced biocompatibility and reduced elastic modulus in comparison with Ti-6Al-4V. Moreover, for orthopedic implants, low Young's modulus is required
Mat. Res.. Publicado em: 09/11/2017
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8. Prevalence and antibiogram of methicillin resistant Staphylococcus aureus isolated from medical device-related infections; a retrospective study in Lahore, Pakistan
Abstract INTRODUCTION: With the advancement of medicine and surgery, various types of medical devices have become part of treatment strategies. METHODS: Identification and antimicrobial sensitivity testing were done according to CLSI guidelines following standard microbiological practices. RESULTS: Urinary catheter infections (31%) were most frequent f
Rev. Soc. Bras. Med. Trop.. Publicado em: 2017-09
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9. THE CORRECT IMPLANT CHOICE FOR TRANSTROCHANTERIC FRACTURE IN BRAZIL
ABSTRACT Objective: To assess the adequacy to the Brazilian population of orthopedic implants used for treatment of proximal femoral fractures. Methods: The neck-shaft angle of the femur of 101 patients was measured in anteroposterior pelvis radiographs and these measurements were correlated to gender, age, height, weight and ethnicity. In addition, we c
Acta ortop. bras.. Publicado em: 2016-12
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10. EVALUATION OF THE KNOWLEDGE ON COST OF ORTHOPEDIC IMPLANTS AMONG ORTHOPEDIC SURGEONS
ABSTRACT Objective: To determine the knowledge of Brazilian Orthopedic Surgeons on the costs of orthopedic surgical devices used in surgical implants . Methods: A questionnaire was applied to Brazilian Orthopedic Surgeons during the 46th Brazilian Congress on Orthopedics and Traumatology . Results: Two hundred and one Orthopedic Surgeons completely fil
Acta ortop. bras.. Publicado em: 2016-08
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11. BIOMATERIAIS: TIPOS, APLICAÇÕES E MERCADO
AbstractThe types of compounds used in the production of biomaterials, namely metals, ceramics, synthetic and natural polymers, as well as composite materials, are discussed in the present work, together with details of their application and evolution from biocompatible to bioactive, biodegradable, and biomimetic clinical products. The chemical structure, th
Quím. Nova. Publicado em: 2015-08
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12. Fretting corrosion tests on orthopedic plates and screws made of ASTM F138 stainless steel
Introduction Although there has been significant progress in the design of implants for osteosynthesis, the occurrence of failures in these medical devices are still frequent. These implants are prone to suffer from fretting corrosion due to micromotion that takes place between the screw heads and plate holes. Consequently, fretting corrosion has been the s
Res. Biomed. Eng.. Publicado em: 2015-04