No description available.

Purpose: The purpose of this study was to investigate if there was any difference in energy expenditure (kcal/min) and oxygen consumption (VO2) between subjects walking with Masai Barefoot Technology ® (MBT) shoes and regular orthopedic shoes. The research hypothesis was that MBT shoes demand more energy expenditure than regular orthopedic shoes. Methods: Seven women aged 49-65 were recruited for the study. The subjects were tested in two sessions, with a minimum of two weeks in between each sesssion. On each test session the subjects walked with both MBT shoes and orthopedic shoes which were adjusted in mass (g) to match the mass of the MBT shoes. While the subjects walked on a treadmill, the oxygen consumption (VO2), heart rate (min-1) and self selected velocity (m/s) for each of the shoe types was measured. Results: Results showed that there is no significant difference in oxygen consumption (VO2) between the MBT and orthopedic shoes. Energy expenditure (kcal/min) was also calculated from the data and the results revealed that there is no significant differ-ence between MBT and orthopedic shoes in energy expenditure (kcal/min) either. The self selected velocity (m/s) between the two shoe types was also found to be insignificant. Conclusion: The results showed no significant difference between the shoes. This could indicate that the specific construction of the MBT shoe has no effect on the energy expenditure (kcal/min) of its user. This lack of difference may be due to the equal mass of the shoes, but since oxygen consumption (VO2) was not investigated in orthopedic shoes with different shoe masses, this conclusion cannot be confirmed. The self selected velocity (m/s) was found to be insignificant and this finding could suggest to that prolonged usage of the MBT shoe may diminish gait parameters dissimilarities during ambulation. This study should therefore be seen as a pilot study and further investigation in this area should be pursued.

Dental and orthopaedic implants are currently the solutions of choice for teeth and joint replacements with success rates continually improving, but they still have undesirable failure rates in patients who are compromised by disease or age, and who in many cases are the ones most in need. The success of titanium (Ti) implants depends on their ability to osseointegrate with the surrounding bone and this, in turn, is greatly dependent on the surface characteristics of the device. Advancements in surface analysis and surface modification techniques have improved the biological performance of metallic implants by mimicking the hierarchical structure of bone associated with regular bone remodeling. In this process, damaged bone is resorbed by osteoclasts, which produce resorption lacunae containing high microroughness generated after mineral dissolution under the ruffled border, as well as superimposed nanoscale features created by the collagen fibers left at the surface. Indeed, increasing Ti surface roughness at the micro and sub-microscale level has been shown to increase osteoblast differentiation in vitro, increase bone-to-implant contact in vivo, and accelerate healing times clinically. Recently, the clinical application of surface nanomodification of implants has been evaluated. Still, most clinically-available devices remain smooth at the nanoscale and fundamental questions remain to be elucidated about the effect of nanoroughness on the initial response of osteoblast lineage cells. Another property that could be used to control osteoblast development and the process of osseointegration is the electrical surface charge of implants. The presence of endogenous electrical signals in bone has been implicated in the processes of bone remodeling and repair. The existence of these native signals has prompted the use of external electrical stimulation to enhance bone growth in cases of fractures with delayed union or nonunion, with several in vitro and in vivo reports confirming its beneficial effects on bone formation. However, the use of electrical stimulation on Ti implants to enhance osseointegration is less understood, in part because of the lack of in vitro models that truly represent the in vivo environment. In addition, an aspect that has not been thoroughly examined is the electrical implication of implant corrosion and its effect on the surrounding tissue. Implants are exposed to extreme conditions in the body such as high pH during inflammation, and cyclic loads. These circumstances may lead to corrosion events that generate large electrochemical currents and potentials, and may cause abnormal cell and tissue responses that could be partly responsible for complications such as aseptic loosening of implants. Consequently, Ti implants with tailored surface characteristics such as nanotopography and electrical polarization, could promote bone healing and osseointegration to ensure successful outcomes for patients by mimicking the biological environment of bone without the use of systemic drugs. The objective of this thesis is to understand how surface nanostructural and electrical characteristics of Ti and Ti alloy surfaces may affect osteoblast lineage cell response in vitro for normal tissue regeneration and repair. Our central hypothesis is that combined micro/nanostructured surfaces, as well as direct stimulation of Ti surfaces with fixed direct current (DC) potentials, can enhance osteoblast differentiation.

In the present work, a study of the preparation of new formulations of acrylic bone cements (ABC) has been carried, to obtain materials with capacity for controlled drug delivery of medicaments useful in the therapeutic treatment of osteoporosis. The main research line has been focused on the partial modification of the solid phase of the conventional formulation of ABC, by substituting part of the PMMA beads with different microparticles of synthetic as well as natural biodegradable polymers. The incorporation of these polymers to the conventional formulation, with a structure based on PMMA, has been focused on two well defined points of view: as a structural component, and as a model component to study its delivery from the material to the external medium, to determine the capacity of the formulation for drug delivery. The work was finished with the evaluation of the capacity of controlled release of proteins and the determination of biocompatibility. / En este trabajo se ha llevado a cabo el estudio de nuevas formulaciones de cementos óseos acrílicos (COA) para su posterior evaluación como sistema de liberación controlada de medicamentos útiles en el tratamiento terapéutico de la osteoporosis. El trabajo se ha fundamentado en la modificación parcial de la fase sólida de los COA, mediante la substitución parcial de las microesferas de PMMA, por diferentes micropartículas de polímeros biodegradables, tanto de naturaleza sintética como natural. La incorporación de estos polímeros a la formulación del COA convencional, cuya estructura polimérica básica es el PMMA, ha sido enfocada desde dos puntos de vista bien diferenciados: como un componente estructural, que aporta resistencia mecánica al material, o como un componente que nos permita determinar la capacidad de liberación de un fármaco como el Ibandronato o de una proteína modelo como el colágeno hidrolizado. Finalmente se ha evaluado la biocompatibilidad de los COA modificados.

Cell adhesion to the extracellular matrix through cell-surface integrin receptors is essential to development, wound healing, and tissue remodeling and therefore represents a central theme in the design of bioactive surfaces that successfully interface with the body. This is especially significant in the areas of integrative implant coatings since adhesion triggers signals that regulate cell cycle progression and differentiation in multiple cellular systems. The interactions of osteoblasts with their surrounding extracellular matrix are essential for skeletal development and homeostasis and the maintenance of the mature osteoblastic phenotype. Our objective was to engineer integrin-specific bioactive surfaces that support osteoblastic differentiation and promote osseointegration by mimicking these interactions. We target two specific integrins essential to osteoblast differentiation the type I collagen receptor alpha2beta1 and the fibronectin receptor alpha5beta1. The central hypothesis of this project was that the controlled presentation of type I collagen and fibronectin binding domains onto well-defined substrates would result in integrin-specific bioadhesive surfaces that support osteoblastic differentiation, matrix mineralization, and osseointegration. We have demonstrated that these biomimetic peptides enhance bone formation and mechanical osseointegration on titanium implants in a rat tibia cortical bone model. We have also shown that the presentation of multiple integrin-binding ligands synergize to enhance intracellular signaling and proliferation. Finally, we demonstrate the advantage of the short biomimetic peptides over the native ECM proteins. This research is significant because it addresses current orthopaedic implant limitations by specifically targeting cellular responses that are critical to osteoblastic differentiation and bone formation. This biomolecular approach provides a versatile and robust strategy for developing bioactive surfaces that enhance bone repair and osseointegration of orthopaedic implants.

Objectif : Récemment, un nouvel appareil issu de la technologie du Forsus™ et visant à corriger les malocclusions de classe III a été mis sur le marché et se popularise dans la pratique orthodontique : le Tandem Forsus Maxillary Corrector (TFMC). L’objectif de la présente étude est de mesurer les effets squelettiques, l’influence réelle sur la croissance, et les effets dento-alvéolaires du port du TFMC. Matériel et méthodes : 14 patients présentant une malocclusion de classe III (âge moyen de 9 ans 6 mois) traités par le même orthodontiste ont participé à cette étude prospective. Le groupe consiste en 10 garçons et 4 filles. Le Tandem Forsus Maxillary Corrector est porté de 12 à 14 heures par jour jusqu’à l’obtention d’une surcorrection du surplomb horizontal et une relation dentaire de classe I. Le traitement est généralement d’une durée de 8 à 9 mois. Des radiographies céphalométriques latérales prises avant (T1) et après (T2) le traitement ont été analysées afin de déterminer les changements dentaires et squelettiques. Les résultats ont été comparés à un groupe contrôle composé de 42 enfants provenant du Centre de croissance de l’Université de Montréal. Les radiographies ont été tracées et analysées de manière aveugle à l’aide du logiciel Dolphin Imaging (ver 11.0, Patterson Dental, Chatsworth, California). L’erreur sur la méthode a été évaluée avec la formule de Dahlberg, le coefficient de corrélation intra-classe et l’indice de Bland-Altman. L’effet du traitement a été évalué à l’aide du test t pour échantillons appariés. L’effet de la croissance pour le groupe contrôle a été calculé à l’aide d’un test t pour échantillons indépendants. Résultats : L’utilisation du TFMC produit un mouvement antérieur et une rotation antihoraire du maxillaire. De plus, il procline les incisives supérieures et rétrocline les incisives inférieures. Une rotation antihoraire du plan occlusal contribue aussi à la correction de la malocclusion de classe III. Par contre, le TFMC ne semble pas avoir pour effet de restreindre la croissance mandibulaire. Conclusion : La présente étude tend à démontrer que le port de l’appareil TFMC a un effet orthopédique et dento-alvéolaire significatif lors du traitement correctif des malocclusions modérées de classe III. / Aim: Recently, a new appliance used to correct class III malocclusions, equipped with the Forsus™ technology, has been marketed and is gaining popularity in orthodontic practice: the Tandem Forsus Maxillary Corrector (TFMC). The purpose of the present study is to measure the skeletal and dento-alveolar effects, and the true influence on growth of the TFMC. Materials and Methods: A prospective study was done with 14 growing children (mean age of 9 years 6 months) who had a class III malocclusion and were treated with the TFMC by the same orthodontist. The group consisted of 10 boys and 4 girls. The «Tandem Forsus Maxillary Corrector» was worn 12 to 14 hours a day until a positive overjet and a class I dental relationship was obtained. For each patient, lateral cephalograms taken before (T1) and after (T2) the treatment were analyzed to determine skeletal and dental changes resulting from treatment. These results were compared to a control group randomly selected from the Growth Center of the University of Montreal. The cephalograms were traced and analyzed with the software Dolphin Imaging (ver 11.0, Patterson Dental, Chatsworth, California). Consistency and repeatability of measurements was evaluated with the intraclass correlation, the Dahlberg formula and the Bland-Altman test. The effect of treatment was evaluated with a paired T-test. The effect of growth for the control group was calculated with an unpaired T-test. Results: Use of the TFMC results in an anterior movement and a counterclockwise rotation of the maxilla. The upper incisors proclined and the lower incisors retroclined. A counterclockwise rotation of the occlusal plane also contributed to the correction of the class III malocclusion. Furthermore, the TFMC does not seem to restrain mandibular growth. Conclusion: The TFMC appliance seems to have a significant orthopedic and dento-alveolar effect when correcting a moderate class III malocclusion.

This doctoral thesis is devoted to studying the possibilities of using additive manufacturing (AM) and design based on computed tomography (CT), for the production of patient-specific implants within orthopedic surgery, initially in a broad perspective and, in the second part of the thesis focusing on customized clavicle osteosynthesis plates. The main AM method used in the studies is the Electron Beam Melting (EBM) technology. Using AM, the parts are built up directly from 3D computer models, by melting or in other ways joining thin layers of material, layer by layer, to build up the part. Over the last 20 years, this fundamentally new way of manufacturing and the rapid development of software for digital 3D reconstruction of anatomical models from medical imaging, have opened up entirely new opportunities for the design and manufacturing of patient-specific implants. Based on the information in a computed tomography (CT) scan, both digital and physical models of the anatomy can be created and of implants that are customized based on the anatomical models.   The main method used is a number of case studies performed, focusing on different parts of the production chain, from CT-scan to final implant, and with several aims: learning about the details of the different steps in the procedure, finding suitable applications, developing the method and trying it out. The first study was on customized hip stems, focusing on the EBM method and its special preconditions and possibilities. It was followed by a study of bone plates, designed to follow the patient-specific bone contour, in this case a tibia fracture including the whole production chain. Further, four cases of patient-specific plates for clavicle fracture fixation were performed in order to develop and evaluate the method. The plates fit towards the patient’s bone were tested in cooperation with an orthopedic surgeon at Östersund hospital. In parallel with the case studies, a method for finite element (FE) analysis of fixation plates placed on a clavicle bone was developed and used for the comparative strength analysis of different plates and plating methods. The loading on the clavicle bone in the FE model was defined on a muscle and ligament level using multibody musculoskeletal simulation for more realistic loading than in earlier similar studies.    The initial studies (papers I and II) showed that the EBM method has great potential, both for the application of customized hip stems and bone plates; in certain conditions EBM manufacturing can contribute to significant cost reductions compared to conventional manufacturing methods due to material savings and savings in file preparation time. However, further work was needed in both of the application areas before implementation. The studies on the fracture fixation using patient-specific clavicle plates indicated that the method can facilitate the work for the surgeon both in the planning and in the operating room, with the potential of a smoother plate with a better fit and screw positioning tailored to the specific fracture (paper VI). However, a large clinical trial is required to investigate the clinical benefit of using patient-specific plates. The FE simulations showed similar stress distributions and displacements in the patient-specific plates and the commercial plates (papers III to VI).   To summarize: the results of this thesis contribute to the area of digital design and AM in patient-specific implants with broad basis of knowledge regarding the technologies used and areas in which further work is needed for the implementation of the technology on a larger scale. Further, a method has been developed and initially evaluated for implementation in the area of clavicle fracture fixation, including an approach for comparing the strength of different clavicle plates.

A avaliação de resultados voltada aos cuidados de saúde surge pela necessidade das profissões demonstrarem a sua efetividade nos resultados dos pacientes. Diversas abordagens têm sido utilizadas para identificar as relações entre as variáveis de Estrutura, Processo e Resultado na avaliação da qualidade do cuidado no contexto hospitalar. Pesquisadoras canadenses desenvolveram o Nursing Role Effectiveness Model (NREM), para auxiliar na identificação da contribuição da enfermagem aos cuidados de saúde. O NREM ainda não foi utilizado na perspectiva do Processo de Enfermagem Avançado, utilizando os Sistemas de Linguagem Padronizada NANDA-I, NIC e NOC para pacientes submetidos à Artroplastia do Quadril. Este estudo teve como objetivo analisar as relações entre as dimensões do Nursing Role Effectiveness Model no acompanhamento dos resultados de pacientes submetidos à Artroplastia do Quadril. Trata-se de um estudo longitudinal, aninhado a um desenho correlacional descritivo. Os dados foram coletados no Hospital de Clínicas de Porto Alegre. A população e amostra consistiram em pacientes submetidos à Artroplastia do Quadril, e enfermeiros assistenciais que prescreveram os cuidados a estes pacientes. No estudo longitudinal, os pacientes foram acompanhados por três a quatro dias consecutivos de pós-operatório, entre os meses de Março e Dezembro de 2016. Os enfermeiros foram entrevistados nos meses de Janeiro e Fevereiro de 2017. Os dados foram analisados estatisticamente. Os achados foram categorizados segundo as dimensões do NREM Estrutura, Processo e Resultado. Resultado: Foram incluídos 85 pacientes predominantemente do sexo feminino (58%), com média de idade de 64 (±13,5) anos. Na dimensão Estrutura, os pacientes foram diagnosticados, segundo a NANDA International (NANDA-I) com Dor Aguda (96%), Risco de Quedas (62%) e Mobilidade Física Prejudicada (54%), respectivamente. A maioria dos pacientes estava em repouso numa Cama Ortopédica (99%). Enfermeiros tinham uma idade média de 33 anos, Sendo a maioria (90%). Experiência com pacientes ortopédicos variou de um a seis anos. O nível de conhecimento na NANDA-I, NIC e NOC foi considerado de moderado a substancial. As intervenções de enfermagem, de acordo com a Nursing Interventions Classification (NIC) mais prescritas foram: Controle da DOR, Prevenção de QUEDAS e POSICIONAMENTO (Processo). Os Resultados da Nursing Outcomes Classification (NOC) (Posicionamento do corpo: autoiniciado, Mobilidade, Conhecimento: atividade prescrita e Nível de dor), tiveram mudanças significativas (P<0,001) durante o acompanhamento dos pacientes. As escalas apresentaram consistência interna (α>0,7). Conclui-se que as variáveis de Estrutura, Processo e Resultados, elencadas neste estudo, possuem relação; e de acordo com os efeitos que geram nos resultados alcançados no paciente, apresenta repercussões na qualidade do Processo de Enfermagem Avançado baseado nos Sistemas de Linguagem Padronizada NANDA-I, NIC e NOC para pacientes submetidos à Artroplastia do Quadril. / The evaluation of health outcomes arises from the need for professions to demonstrate their effectiveness in patient outcomes. Several approaches have been used to identify the relationships between the Structure, Process and Outcomes variables in the quality care evaluation in the hospital. Canadian researchers to developed the Nursing Role Effectiveness Model (NREM) to identify the nursing contribution to health care. The NREM was not analyzed from the perspective of the Advanced Nursing Process, using the Standardized Language Systems NANDA-I, NIC and NOC for patients undergoing Hip Arthroplasty. This study aimed to analyze the relationships between the dimensions of the Nursing Role Effectiveness Model in the follow-up of the outcomes of patients undergoing for Hip Arthroplasty. It is a longitudinal study nested for descriptive correlative design. The data were collected at Hospital de Clínicas de Porto Alegre, Brazil. The population and sample consisted of patients undergoing to Hip Arthroplasty, and nurse assistants who prescribed care for these patients. In the longitudinal study patientes were followed for three to four postoperative day, on the March to December 2016. Nurses were interviewed in January and February 2017. Data were statistically analyzed. The findings were categorized according to the dimensions Structure, Process and Outcomes, from NREM. Results: Variables Structure, were included 85 patients predominantly female (58%), mean age 64 (± 13.5) years. The patients were diagnosed with Acute Pain (96%), Risk of Falls (62%) and Impaired Physical Mobility (54%), respectively. The majority of patients were resting in the Orthopedic Bed (99%). Nurses had a mean age of 33 years, being the majority (90%) female. Experience with orthopedic patients ranged from one to six years. Knowledge level in NANDA-I, NIC and NOC was considered moderate to substantial. The most prescribed NIC nursing interventions were: PAIN Control, FALL Prevention and POSITIONING, considered as Process variables. The Nursing outcomes NOC (Body Positioning: self-initiated, Mobility, Knowledge: prescribed activity and Pain Level) included in the Outcome dimension from NREM, had significant changes (P <0.001) during the follow-up. The scales showed internal consistency (α> 0.7). It is concluded that the Structure, Process and Outcomes variables are related and according to the effects it generates on the outcomes achieved, it has repercussions on the Advanced Nursing Process quality based on the Standardized Language Systems NANDA- I, NIC and NOC for patients submitted to Hip Arthroplasty.

Made available in DSpace on 2014-06-11T19:33:23Z (GMT). No. of bitstreams: 0 Previous issue date: 2003-08-04Bitstream added on 2014-06-13T20:24:53Z : No. of bitstreams: 1 melo_acm_dr_arafo.pdf: 963455 bytes, checksum: 63082d3d54677a9308f74993608f95fa (MD5) / A deficiência de dados na literatura nos levou a avaliar o efeito do tratamento com o aparelho bionator de Balters no perfil facial de crianças com má oclusão Classe II, divisão 1 de Angle, excluindo as mudanças que ocorreriam com o crescimento natural. A amostra consistiu de telerradiografias de pacientes leucodermas com idades entre 6 anos e 11 meses e 11 anos e 2 meses, divididos aleatoriamente em dois grupos. Um grupo controle, composto por 11 pacientes acompanhados sem tratamento por 1 ano, e um grupo experimental, composto por 12 pacientes acompanhados durante 1 ano de tratamento, sendo que oito desses pacientes foram avaliados no 2º ano de tratamento. A seleção da amostra teve como critérios de inclusão a presença dos incisivos centrais e laterais permanentes erupcionados ou em erupção, sobremordida e sobressaliência aumentadas e ausência de apinhamento dentário e alteração transversal dos arcos. A análise cefalométrica constou de medidas tradicionais angulares e lineares, esqueléticas, dentárias e de tecidos moles, além da verificação do deslocamento individual dos pontos do perfil facial em coordenadas x e y. A aplicação do teste de Levene mostrou evidências estatísticas de semelhança inicial entre os grupos. Procedeu-se então a análise estatística que mostrou alterações significantes (p<0,05) nas variáveis indicativas de convexidade esquelética, espessura dos lábios e comprimento do lábio inferior, além de aumento da altura facial esquelética e tegumentar. Por outro lado, não foi significante a alteração na convexidade tegumentar e comprimento do lábio superior nos pacientes tratados. Pode ser concluído com base nos resultados encontrados que o uso do bionator teve efeito favorável na alteração do perfil facial, principalmente na região de lábios e na altura facial. / Literature deficiency has led us to evaluate the changes on soft-tissue profile of Class II division 1 children induced by the use of Balters bionator appliance, excluding the changes that would occur with normal growth. The sample consisted of lateral radiographies of leucoderm children from 6 years and 11 months to 11 years and 2 months, randomly divided into two groups. The control group was formed by 11 patients followed with no treatment during one year, and the experimental one was composed by 12 children, accompanied for 1 year, but eight of these patients were also evaluated 2 years after the treatment onset. The inclusion criteria were the central and lateral permanent incisors erupted or into eruption, increased overjet and overbite, and no crowding or transverse problems in the dental arches. The cephalometric analysis consisted of angular and linear skeletal, dental and soft-tissue traditional measurements as well as the verification of the individual dislocation of the soft-tissue points in x and y coordinates. Levene's test application showed statistical evidence of similarity between the groups on the beginning of the research. The statistical analysis showed significant alterations (p<0,05) of either skeletal convexity, width of upper and lower lips, and lower lip length, or skeletal and soft-tissue vertical height. On the other hand, there was no significant change on soft-tissue convexity and upper lip length in the treated patients. It can be concluded that the use of bionator had a favorable effect on soft-tissue profile, especially on lips and vertical facial height.

A Radiologia tem sido considerada uma das áreas da Medicina que mais se desenvolve, especialmente com o aporte de novas tecnologias. Entre as aplicações da Radiologia Intervencionista destaca-se a utilização da fluoroscopia no centro cirúrgico em complemento às cirurgias ortopédicas, objeto da presente pesquisa. Entretanto, alguns complexos e longos procedimentos guiados fluoroscopicamente podem resultar em altos níveis de exposição ocupacional às radiações ionizantes para equipe de cirurgia ortopédica e trabalhadores de saúde, induzir sérios danos à saúde. Levando em conta esses aspectos, o objetivo geral dessa pesquisa consiste em determinar a exposição ocupacional da equipe de cirurgia ortopédica em procedimentos guiados por fluoroscopia e verificar dentre as cirurgias observadas a que oferece maior exposição ocupacional às radiações ionizantes, como também, a aplicação dos princípios básicos de proteção radiológica nestes procedimentos. A metodologia utilizada para essa pesquisa foi a qualiquantitativa do tipo exploratória. A pesquisa foi realizada no Hospital de Clínicas da Universidade Federal de Curitiba (UFPR). Os sujeitos pesquisados foram os membros da equipe de cirurgia ortopédica, ou seja, médicos ortopedistas, residentes, anestesias, instrumentador cirúrgico, técnicos e auxiliares de enfermagem, e enfermeiros. A coleta de dados foi realizada de 01 de janeiro a 30 de maio de 2011. Contribuíram para a pesquisa, 44 trabalhadores que responderam uma entrevista coletiva, e um questionário com 25 perguntas fechadas. foi constituídos quatro grupos de onze participantes cada, seguida de análise documental e de monitoração da área pesquisada e individual. Os resultados mostraram que os profissionais de saúde do setor pesquisado expõem-se às radiações ionizantes, devido à demanda de cirurgias guiadas por equipamentos emissores de radiação ionizantes fluoroscopicamente, e a falta de conhecimento em radioproteção. Diante dessas constatações foram sugeridas pelos grupos medidas de prevenção a essas exposições de modo a minimizar possíveis efeitos biológicos das radiações ionizantes. Foi concluído que existe exposição ocupacional com os trabalhadores do setor pesquisado, os mesmos tem pouco conhecimento quanto ao uso dos equipamentos de radioproteção nos procedimentos cirúrgicos com equipamentos emissores de radiações ionizantes, não usam corretamente os monitores individuais. / Radiology has been considered one of the areas of medicine that most devel-ops, especially with the contribution of new technologies. Among the applications of Interventional Radiology highlights the use of fluoroscopy in the surgical center in addition to co-orthopedic surgeries, the object of the present research. Entretan-to some complex and lengthy fluoroscopically guided procedures can result in high levels of occupational exposure to ionizing radiation for e-quipe orthopedic surgery and health workers, induce serious damage to health. Considering these aspects, the general objective of this research is to de-termine the occupational exposure of the team of orthopedic surgery proce-dures guided by fluoroscopy and verify observed among the surgeries that offer greater occupational exposure to ionizing radiation, but also the application of basic principles of radiological protection in these procedures. The methodology for this research was the qualitative and quantitative exploratory type. The research was conducted at Hospital de Clinicas, Federal University of Curitiba (UFPR). Study subjects were members of the team of orthopedic surgery, or orthopedic doctors, residents, anesthesia, surgical instrumentator, technicians and nursing assistants, and nurses. Data collection was performed from January 1 to May 30, 2011. Contributors to the survey, 44 workers who answered a news conference, and a questionnaire with 25 closed questions of. was divided in four groups of eleven participants each, followed by document analysis and monitoring of the area and searched individually. The results we-strated that the health sector professionals surveyed were exposed to ionizing radiation, due to demand-driven surgery equipment emitting ionizing radiation fluoroscopically, and the lack of knowledge in radioprote-tion. Before these findings were suggested by the groups pre-vention measures of these exposures to minimize possible biological effects of ionizing radiation-tions. It was concluded that occupational exposure exists with re-worked in the sector researched, they have little knowledge about the use of radiation protection equipment in surgical procedures with equipment emitting ionizing radiation, properly use the monitors indi-tions.