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One-Stage Revision of Infected Total Hip Arthroplasty with Bone Graft

RUDELLI, Sergio; UIP, David; HONDA, Emerson; LIMA, Ana Lucia L. M.
Fonte: CHURCHILL LIVINGSTONE INC MEDICAL PUBLISHERS Publicador: CHURCHILL LIVINGSTONE INC MEDICAL PUBLISHERS
Tipo: Artigo de Revista Científica
ENG
Relevância na Pesquisa
66.38%
There are many different opinions in the literature regarding the best procedure for revision of infected hip arthroplasty and hence in achieving long-term stabilization of a new implant. Thirty-two patients with 32 loose and infected total hip arthroplasties underwent revision with a bone graft in a 1-stage procedure. The bone graft was used in the acetabulum and femure in 25 patients, in the acetabulum alone in 4 patients and in the femur alone in 3 patients. A metal mesh was necessary in 15 patients to contain the morselized bone graft. At the time of surgical revision, 9 patients had a draining sinus, 6 had a closed sinus, and 17 had never had sinuses in the surgical wound. Antibiotic therapy was administered intravenously and orally for 6 months. Mean follow-up was 103 months (range, 63-183 months), and infection recurred in 2 (6.2%) cases. Further studies are necessary, and continuation of this method is justified.

Influence of Osteopenia in Autogenous Bone Graft Healing With or Without Expanded Polytetrafluoroethylene Membranes: Histologic and Histomorphometric Study in Rats

NASCIMENTO, Rodrigo Dias; CARDOSO, Paula Elaine; MARCO, Andrea C. De; LIMA, Luiz Antonio Pugliesi Alves de; JARDINI, Maria Aparecida Neves
Fonte: QUINTESSENCE PUBLISHING CO INC Publicador: QUINTESSENCE PUBLISHING CO INC
Tipo: Artigo de Revista Científica
ENG
Relevância na Pesquisa
56.58%
Purpose: The aim of this study was to quantitatively evaluate and qualitatively describe autogenous bone graft healing with or without an expanded polytetrafluoroethylene (e-PTFE) membrane in ovariectornized rats. Materials and Methods: Eighty Wistar rats, weighing approximately 300 g each, were used. A graft was obtained from the parietal bone and fixed to the sidewall of each animal`s left mandibular ramus. The animals were randomly divided into four experimental groups (n = 20 in each group): group 1, sham operated and autogenous bone graft only- group 2, sham operated and autogenous bone graft covered by e-PTFE membrane; group 3, ovariectornized (OVX) and autogenous bone graft only- group 4, OVX and autogenous bone graft covered by e-PTFE membrane. The animals were sacrificed at five different time points: immediately after grafting or at 7, 21, 45, or 60 days after grafting. Histologic examination and morphometric measurement of the sections were performed, and values were submitted to statistical analyses. Results: Both groups (sham and OVX) experienced loss of the original graft volume when it was not covered by the membrane, whereas use of the membrane resulted in additional bone formation beyond the edges of the graft and under the membrane. Histologic analysis showed integration of the grafts in all animals...

Influence of decortication of the recipient graft bed on graft integration and tissue neoformation in the graft-recipient bed interface

CANTO, Fabiano R. T.; GARCIA, Sergio B.; ISSA, Joao P. M.; MARIN, Anderson; BEL, Elaine A. Del; DEFINO, Helton L. A.
Fonte: SPRINGER Publicador: SPRINGER
Tipo: Artigo de Revista Científica
ENG
Relevância na Pesquisa
56.58%
The objective of the present study was to assess the influence of decortication of the posterior elements of the vertebra (recipient bed) and the nature of the bone graft (cortical or cancellous bone) on graft integration and bone, cartilage and fiber neoformation in the interface between the vertebral recipient bed and the bone graft. Seventy-two male Wistar rats were divided into four experimental groups according to the presence or absence of decortication of the posterior vertebral elements and the use of a cortical or cancellous bone graft. Group I-the posterior elements were decorticated and cancellous bone used. Group II-the posterior elements were decorticated and cortical graft was used. Group III-the posterior elements were not decorticated and cancellous graft was used. Group IV-the posterior elements were not decorticated and cortical graft was used. The animals were killed 3, 6 and 9 weeks after surgery and the interface between the posterior elements and the bone graft was subjected to histomorphometric evaluation. Mean percent neoformed bone was 40.8% in group I (decortication and cancellous graft), 39.13% in group II (decortication and cortical graft), 6.13% in group III (non-decorticated and cancellous graft), and 9.27% in group IV (non-decorticated and cortical graft) for animals killed at 3 weeks (P = 0.0005). For animals killed at 6 weeks...

Enxerto corticoesponjoso homógeno processado quimicamente, esterilizado em óxido de etileno e embebido em medula óssea autógena. Estudo experimental em cães (Canis familiaris LINNAEUS, 1758); Homogenous cortical-cancellous bone graft chemically processed, sterilized with ethylene oxide and soaked in autogenous bone marrow. An experimental study in dogs (Canis familiaris LINNAEUS, 1758).

Castania, Vitor Aparecido
Fonte: Biblioteca Digitais de Teses e Dissertações da USP Publicador: Biblioteca Digitais de Teses e Dissertações da USP
Tipo: Tese de Doutorado Formato: application/pdf
Publicado em 04/05/2007 PT
Relevância na Pesquisa
66.57%
Foi estudado experimentalmente o desempenho biológico de um tipo de enxerto ósseo homógeno, processado quimicamente, esterilizado em óxido de etileno e embebido em medula óssea autógena. De cães doadores adulto-jovens foram obtidos blocos cilíndricos de 1,0 x 1,0 cm da epífise distal do fêmur, com auxílio de uma trefina. Os ossos assim obtidos foram clareados, desengordurados, esterilizados em óxido de etileno e mantidos em estoque. Trinta cães adultos jovens foram usados como receptores do enxerto e foram alocados em dois grupos. No grupo I (experimental) os animais foram operados e, criado, transversalmente, com trefina de 1,0 cm de diâmetro externo, um espaço cilíndrico de 1,0 cm de diâmetro por 1,0 cm de altura na epífise distal do fêmur direito, onde foi encaixado o enxerto preparado e que foi previamente embebido em medula óssea do próprio animal retirada por punção óssea na crista ilíaca. Três semanas depois, o mesmo animal foi submetido ao mesmo procedimento cirúrgico no fêmur esquerdo. Os cães deste grupo foram sacrificados seis semanas após a primeira cirurgia. O grupo II constituiu o controle e foi formado por vinte cães adulto-jovens em que, primeiro, foi retirado um cilindro de osso da epífise distal do fêmur esquerdo e...

Influência da decorticação na neoformação tecidual da interface do enxerto ósseo na coluna vertebral; Decortication influence in the new tissue formation in the bone graft interface in the spine.

Canto, Fabiano Ricardo de Tavares
Fonte: Biblioteca Digitais de Teses e Dissertações da USP Publicador: Biblioteca Digitais de Teses e Dissertações da USP
Tipo: Tese de Doutorado Formato: application/pdf
Publicado em 23/10/2007 PT
Relevância na Pesquisa
66.54%
Foi realizado estudo experimental para determinar a influência da decorticação dos elementos posteriores da coluna vertebral na integração do enxerto ósseo autólogo esponjoso ou cortical, considerando a avaliação histológica quantitativa e qualitativa dos tecidos (ósseo, cartilaginoso e fibroso) presentes na interface entre o leito receptor e o enxerto ósseo. Setenta e dois ratos Wistar foram divididos em quatro grupos experimentais: grupo I_ leito posterior decorticado enxerto esponjoso, grupo II_ leito posterior decorticado enxerto cortical, grupo III_ leito posterior não decorticado enxerto esponjoso, grupo IV_ leito posterior não decorticado enxerto cortical. Os quatro grupos experimentais foram sacrificados com 3, 6 e 9 semanas de pós-operatório e a região operada foi submetida a avaliação histológica e histomorfométrica. Nos animais sacrificados com 3 semanas de pós-operatório a média da porcentagem de osso neoformado no grupo I foi de 40,87%±5,24, no grupo II de 39,13%±7,27, no grupo III de 6,13%±2,13, no grupo IV de 9,27%±4,06. Foi observada diferença estatística entre os valores da neoformação óssea (p=0,0005). A média da porcentagem de tecido cartilaginoso neoformado no grupo I foi de 8,36%±1...

Reparação ao redor de implantes de titânio após regeneração óssea guiada com membrana reabsorvível; Healing around titanium implants after guided bone regeneration with bioresorbable membrane

Santos, Rodrigo Albuquerque Basilio dos
Fonte: Biblioteca Digitais de Teses e Dissertações da USP Publicador: Biblioteca Digitais de Teses e Dissertações da USP
Tipo: Dissertação de Mestrado Formato: application/pdf
Publicado em 26/04/2010 PT
Relevância na Pesquisa
56.55%
O objetivo desse estudo foi descrever o padrão de reparação da ROG, após o uso de osso autógeno e membrana de colágeno suíno (BioGide). Foram utilizados 30 ratos machos Wistar, nos quais 30 mini-implantes fixaram enxerto ósseo autógeno do tipo onlay, originário de osso parietal, na região do ângulo da mandíbula. Os enxertos foram recobertos com membranas de colágeno e os animais sacrificados nos períodos de zero hora, 14, 21, 45 e 150 dias. As amostras foram descalcificadas e processadas pela técnica de fratura (Berglundh et al., 1991). Após 2 semanas, a interface entre o leito e o enxerto encontrava-se preenchida por tecido conjuntivo imaturo rico em vasos e fibroblastos. Aos 21 dias, observou-se osso neoformado sob a membrana e junto aos bordos do enxerto, integrando o enxerto ao leito. Este apresentava intensa remodelação, de modo que junto às fresas do implante observamos osso imaturo e vasos. Aos 45 dias, a estrutura colágena original da membrana apresentou avançado grau de reabsorção e diminuição da sua espessura. O tecido ósseo formado sob a membrana demonstrou início de organização lamelar. No período final, após 150 dias, o enxerto apresentou-se completamente integrado ao osso receptor e com adiantado grau de maturação. Conclui-se que após 21 dias...

Tibial segmental bone defect treated with bone plate and cage filled with either xenogeneic composite or autologous cortical bone graft

Teixeira, C. R.; Rahal, S. C.; Volpi, R. S.; Taga, R.; Cestari, I. M.; Granieiro, J. M.; Vulcano, L. C.; Correa, M. A.
Fonte: Schattauer Gmbh-verlag Medizin Naturwissenschaften Publicador: Schattauer Gmbh-verlag Medizin Naturwissenschaften
Tipo: Artigo de Revista Científica Formato: 269-276
ENG
Relevância na Pesquisa
66.43%
Tibia segmental defect healing in sheep were clinically, radiographically and histologically evaluated. Twelve young sheep aged four to five months were divided into two groups, G1 and G2. A 3.5 cm long segmental defect was created in the right tibial diaphysis with maintenance of the periosteum. The bone defects in both groups were stabilized with a bone plate combined with a titanium cage. In G1 the cage was filled with pieces of autologous cortical bone graft. In G2 it was filled with a composite biomaterial which consisted of inorganic bovine bone, demineralized bovine bone, a pool of bovine bone morphogenetic proteins bound to absorbable ultra-thin powdered hydroxyapatiteand bone-derived denaturized collagen. Except for one G1 animal, all of them showed normal limb function 60 days after surgery. Radiographic examination showed initial formation of periosteal callus in both groups at osteo-tomy sites, over the plate or cage 15 days postoperatively. At 60 and 90 days callus remodeling occurred. Histological and morphometric analysis at 90 days after surgery showed that the quantity of implanted materials in G1 and G2 were similar, and the quantity of new bone formation was less (p = 0.0048) and more immature in G1 than G2, occupying 51 +/- 3.46% and 62 +/- 6.26% of the cage space...

Cocaine associated with onlay bone graft failure: A clinical and histologic report

Shibli, Jamil Awad; Marcantonio, Elcio; Spolidorio, Luis Carlos; Marcantonio Jr., Elcio
Fonte: Universidade Estadual Paulista Publicador: Universidade Estadual Paulista
Tipo: Artigo de Revista Científica Formato: 248-251
ENG
Relevância na Pesquisa
66.51%
This patient report presents an unusual onlay bone graft failure following local cocaine application. Three months after the bone grafting procedure performed in the anterior maxilla for bone volume augmentation, the bone graft was totally exposed in the oral cavity as a result of the rubbing of cocaine on the gingival tissue that covered the bone graft. A histologic view of the removed bone fragment presented not only an area of necrosis but also ample spaces filled with necrosis material and resorption areas. Dental practitioners need to be aware of this phenomenon because such patients often do not report the use of drugs, particularly cocaine. Copyright © 2005 by Lippincott Williams & Wilkins.

Reconstruction of Mandibular Segmental Defects Using the Guided-Bone Regeneration Technique With Polylactide Membranes and/or Autogenous Bone Graft: A Preliminary Study on the Influence of Membrane Permeability

Sverzut, Cassio E.; Faria, Paulo E. P.; Magdalena, Carolina M.; Trivellato, Alexandre E.; Mello-Filho, Francisco V.; Paccola, Cleber A. J.; Gogolewski, Sylwester; Salata, Luiz A.
Fonte: Universidade Estadual Paulista Publicador: Universidade Estadual Paulista
Tipo: Artigo de Revista Científica Formato: 647-656
ENG
Relevância na Pesquisa
66.39%
Purpose: Bone maintenance after mandibular reconstruction with autogenous iliac crest may be disappointing due to extensive resorption in the long term. The potential of the guided-bone regeneration (GBR) technique to enhance the healing process in segmental defects lacks comprehensive scientific documentation. This study aimed to investigate the influence of polylactide membrane permeability on the fate of iliac bone graft (BG) used to treat mandibular segmental defects. Materials and Methods: Unilateral 10-mm-wide segmental defects were created through the mandibles of 34 mongrel dogs. All defects were mechanically stabilized, and the animals were divided into 6 treatment groups: control, BG alone, microporous membrane (poly L/DL-lactide 80/20%) (Mi); Mi plus BG; microporous laser-perforated (15 cm2 ratio) membrane (Mip), and Mip plus BG. Calcein fluorochrome was injected intravenously at 3 months, and animal euthanasia was carried out at 6 months postoperatively. Results: Histomorphometry showed that BG protected by Mip was consistently related to larger amounts of bone compared with other groups (P ≤ .0001). No difference was found between defects treated with Mip alone and BG alone. Mi alone rendered the least bone area and reduced the amount of grafted bone to control levels. Data from bone labeling indicated that the bone formation process was incipient in the BG group at 3 months postoperatively regardless of whether or not it was covered by membrane. In contrast...

Management of pure medial orbital wall fracture with autogenous bone graft

Pereira, Rodrigo Dos Santos; Jorge-Boos, Fernanda Brasil Daura; Hochuli-Vieira, Eduardo; Da Rocha, Hernando Valentim; Homsi, Nicolas; De Melo, Willian Morais
Fonte: Universidade Estadual Paulista Publicador: Universidade Estadual Paulista
Tipo: Artigo de Revista Científica
ENG
Relevância na Pesquisa
66.37%
The orbit is an irregular conical cavity formed from 7 bones including the frontal, sphenoid, zygomatic, maxillary, ethmoid, lacrimal, and palatine bones. Fractures of the internal orbit can cause a number of problems, including diplopia, ocular muscle entrapment, and enophthalmos. Although muscle entrapment is relatively rare, diplopia and enophthalmos are relatively common sequelae of internal orbital fractures. Medial orbital wall fracture is relatively uncommon and represents a challenge for its anatomical reconstruction. In this context, autogenous bone graft has been the criterion standard to provide framework for facial skeleton and orbital walls. Therefore, it is possible to harvest grafts of varying size and contour, and the operation is performed through the bicoronal incision, which is the usual approach to major orbital reconstruction. Thus, this article aimed to describe a patient with a pure medial orbital wall fracture, and it was causing diplopia and enophthalmos. The orbital fracture was treated using autogenous bone graft from calvarial bone. The authors show a follow-up of 12 months, with facial symmetry and without diplopia and enophthalmos. In addition, a computed tomography scan shows excellent bone healing at the anterior and posterior parts of the medial orbital wall reconstruction. Copyright © 2013 by Mutaz B. Habal...

Block Bone Graft Fixation ( Onlay): A Modification of the Surgical Technique

Gealh, Walter Cristiano; Santos, Pamela Leticia dos; Silva Pereira, Cassiano Costa; Okamoto, Tetuo; Antoniali, Cristina; Okamoto, Roberta
Fonte: Lippincott Williams & Wilkins Publicador: Lippincott Williams & Wilkins
Tipo: Artigo de Revista Científica Formato: 645-647
ENG
Relevância na Pesquisa
66.36%
Several reconstructive methods of the alveolar ridge have been reported to make possible future rehabilitations with implants. Many of these methods come from studies done in animals, mainly rats. With this clinical practice based on scientific evidence, any experimental procedure that can be undertaken in real life is fundamental. Thus, any research that emulates as closely as possible those techniques used in humans are important. This study describes the modification of the technique for block bone graft fixation (onlay) in rats using the lag screw-type technique, normally used in clinical procedures for grafts in humans. The conclusion was that the execution of the described procedures minimizes interference of blood flow in the area because of the maintenance of the muscle insertion in the buckle aspect of the most anterior region of the mandible, providing better stability to the graft and better contact interface of the graft and receptor bed.

Influence Analysis of Cleft Type and Supernumerary Teeth Eruption in the Prognosis of Bone Graft in Patients With Cleft Palate

Gaujac, Cristiano; Souza Faco, Eduardo Francisco de; Shinohara, Elio Hitoshi; Souza Faco, Renato Andre de; Pereira, Flavia Priscila; Assuncao, Wirley Goncalves
Fonte: Lippincott Williams & Wilkins Publicador: Lippincott Williams & Wilkins
Tipo: Artigo de Revista Científica Formato: E408-E411
ENG
Relevância na Pesquisa
66.37%
Objective: The aim of this study was to investigate the influence of cleft type and supernumerary tooth eruption on the treatment of palatal clefts with alveolar bone grafts.Materials and Methods: In this article, medical records of 40 patients with palatal clefts and associated supernumerary teeth who were treated with alveolar bone grafting in the Hospital for Craniofacial Anomalies Rehabilitation were assessed. The patients were studied to assess the influence of supernumerary teeth and the cleft severity on the prognosis of the alveolar bone graft.Results: Forty medical records were included in the assessment. When the teeth in the cleft had an anatomic shape close to canine, we called them precanine. When they were very small or malformed, we called them anomalous lateral incisors. The teeth studied showed good prognoses and were more expressive in the preforaminal clefts (87.5%) than in the transforaminal ones (62.5%). Moreover, the transforaminal clefts presented a higher percentage in satisfactory and poor prognoses (37.5%). The authors found that supernumerary teeth influenced the maintenance of alveolar bone graft height and that transforaminal clefts presented a worse prognosis than preforaminal clefts.

Calvarial Autogenous Bone Graft for Maxillary Ridge and Sinus Reconstruction for Rehabilitation With Dental Implants

Bastos, Alliny Souza; Spin-Neto, Rubens; Conte-Neto, Nicolau; Galina, Keidy; Boeck-Neto, Rodolfo Jorge; Marcantonio, Claudio; Marcantonio, Elcio
Fonte: Allen Press Inc Publicador: Allen Press Inc
Tipo: Artigo de Revista Científica Formato: 469-478
ENG
Relevância na Pesquisa
66.45%
Autogenous bone grafting is the gold-standard technique for bone augmentation procedures prior to implant placement. If the amount of available intraoral donor bone is insufficient, it is necessary to harvest bone graft from extraoral sites, such as calvaria. Although this technique is well established, only a few case reports show the histological analysis of the grafted bone at the moment of implant placement. This article reports the case of a 48-year-old female patient with a critical atrophic maxillary ridge reconstructed using autogenous calvarial bone graft prior to implant placement, with clinical and histological evaluation. Bone was collected under general anesthesia from the parietal bone. The outer cortical originated the bone blocks, and the medullar bone layer between was collected to be used in the sinus augmentation procedure, together with 5 of the bone blocks triturated. Six months after bone augmentation, 8 implants were placed in the grafted area and 2 biopsies were retrieved (anterior and the posterior regions), allowing the visualization of the bone-remodeling process in the grafted areas. The patient had a stable recovery. Our results showed that although necrotic bone could still be seen in the outer layer of the grafted area...

Análise microestrutural de sítios ósseos implantares da maxila reconstruídos com enxerto autógeno e xenógeno = : Micro-computed tomography of maxillary implant sites reconstructed with autogenous and xenogenous bone graft; Micro-computed tomography of maxillary implant sites reconstructed with autogenous and xenogenous bone graft

Karla de Faria Vasconcelos
Fonte: Biblioteca Digital da Unicamp Publicador: Biblioteca Digital da Unicamp
Tipo: Tese de Doutorado Formato: application/pdf
Publicado em 23/02/2015 PT
Relevância na Pesquisa
66.55%
O conhecimento da microarquitetura óssea desempenha importante papel no sucesso das reconstruções ósseas e posterior reabilitação com implantes dentários. Os objetivos dessa pesquisa foram: 1. Avaliar a microarquitetura óssea de sítios da maxila, que foram reconstruídos com enxertos ósseos, autógeno e xenógeno e 2. Avaliar tridimensional e bidimensionalmente a formação óssea na superfície dos parafusos de fixação (BIC-Bone-to-implant contact). Doze amostras contendo parafusos de fixação recobertos por 0,5 a 1mm de osso humano foram removidas com auxílio de uma broca trefina, após seis meses da colocação de blocos de enxerto em maxila de 8 pacientes, cinco mulheres e três homens, com média de idade entre 50 anos. Sete de sítios xenógenos e cinco de autógenos. As amostras foram avaliadas por meio de imagens obtidas pelo microtomógrafo SkyScan 1173 e por meio da técnica histológica de Stevenels blue e Van Giesen red. Para caracterizar a microarquitetura foram avaliados: a razão volume ósseo/volume tecidual, espessura das trabéculas, distância trabecular, número de trabéculas e densidade de conectividade, em três áreas distintas (enxerto/transição/osso nativo). O cálculo do BIC 2D foi realizado em imagens histológicas e microtomográficas. O BIC 3D foi viabilizado em áreas selecionadas em 17 amostras...

A preclinical study of stem subsidence and graft incorporation after femoral impaction grafting using porous hydroxyapatite as a bone graft extender

Howie, D.; Mc Gee, M.; Callary, S.; Carbone, A.; Stamenkov, R.; Bruce, W.; Findlay, D.
Fonte: Churchill Livingstone Inc Medical Publishers Publicador: Churchill Livingstone Inc Medical Publishers
Tipo: Artigo de Revista Científica
Publicado em //2011 EN
Relevância na Pesquisa
66.44%
This preclinical in vivo screening study compared bone graft incorporation and stem subsidence in cemented hemiarthroplasty after femoral impaction bone grafting with either morselized allograft bone (n = 5, control group) or a 1:1 mix of allograft and porous hydroxyapatite ceramics (HA) granules (n = 5, HA group). At 14 weeks, there was excellent bone graft incorporation by bone, and the stems were well fixed in both groups. The median subsidence at the cement-bone interface, measured using radiostereometric analysis, was 0.14 and 0.93 mm in the control and HA groups, respectively. The comparable histologic results between groups and good stem fixation in this study support the conduct of a larger scale investigation of the use of porous HA in femoral impaction bone grafting at revision hip arthroplasty.; Donald W. Howie, Margaret A. McGee, Stuart A. Callary, Angelo Carbone, Roumen B. Stamenkov, Warrick J. Bruce, and David M. Findlay

Osteotomía de fulkerson más injerto óseo tricortical (efecto maquet) en el manejo de la artrosis patelofemoral grado iv asociado a mal alineamiento patelofemoral: cohorte retrospectiva: 45 rodillas; Fulkerson osteotomy more tricortical bone graft (maquet effect) in the management of osteoarthritis patello-femoral grade iv associated patello-femoral malaligment: retrospective cohort: 45 knees

Sánchez Villa, Francisco Javier; Afanador Acuña, Edgar
Fonte: Universidad Militar Nueva Granada; Facultad de Medicina; Ortopedia y Traumatología Publicador: Universidad Militar Nueva Granada; Facultad de Medicina; Ortopedia y Traumatología
Tipo: bachelorThesis; Trabajo de grado Formato: pdf; pdf
SPA
Relevância na Pesquisa
66.47%
Introducción: Las opciones de tratamiento quirúrgico en artrosis patelofemoral grado IV secundaria a malalineamiento patelofemoral son limitadas. Los procedimientos quirúrgicos más utilizados son el realineamiento distal de la rótula mediante los diferentes tipos de osteotomías del tubérculo tibial con resultados variables según lo reportado en la literatura. Objetivo: Evaluar la funcionalidad y el nivel de dolor en una cohorte de pacientes con artrosis patelofemoral grado IV secundaria a malalineamiento patelofemoral, tratados mediante osteotomía Fulkerson más injerto óseo tricortical, entre 2001 y 2011. Materiales y métodos: Se realizó un estudio de cohorte retrospectiva única de pacientes con artrosis patelofemoral grado IV secundaria a malalineamiento patelofemoral que fueron tratados mediante osteotomía Fulkerson más injerto óseo tricortical entre 2001 y 2011. Los resultados fueron evaluados mediante la aplicación de la escala funcional de Lysholm modificada por Fulkerson y la escala visual análoga para el dolor (EVA). El seguimiento promedio fue de 44,0 ± 26,8 meses (mediana = 34,3 meses) con un rango entre 2 y 11,9 años. Resultados: Un total de 38 pacientes (45 rodillas, 7 bilaterales) fueron tratados con la técnica descrita. El más frecuente fue el género femenino con 92...

Osteotomía de Fulkerson más injerto óseo tricortical (efecto maquet) en el manejo de la artrosis patelofemoral grado iv asociado a malalineamiento patelofemoral: cohorte retrospectiva: 45 rodillas; Fulkerson osteotomy more tricortical bone graft (maquet effect) in the management of osteoarthritis patello-femoral grade iv associated patello-femoral malalignment: retrospective cohort: 45 knees

Sánchez Villa, Francisco Javier; Afanador Acuña, Edgar
Fonte: Universidad Militar Nueva Granada; Facultad de Medicina; Ortopedia y Traumatología Publicador: Universidad Militar Nueva Granada; Facultad de Medicina; Ortopedia y Traumatología
Tipo: bachelorThesis; Trabajo de grado Formato: pdf; pdf
SPA
Relevância na Pesquisa
66.47%
Introducción: Las opciones de tratamiento quirúrgico en artrosis patelofemoral grado IV secundaria a malalineamiento patelofemoral son limitadas. Los procedimientos quirúrgicos más utilizados son el realineamiento distal de la rótula mediante los diferentes tipos de osteotomías del tubérculo tibial con resultados variables según lo reportado en la literatura. Objetivo: Evaluar la funcionalidad y el nivel de dolor en una cohorte de pacientes con artrosis patelofemoral grado IV secundaria a malalineamiento patelofemoral, tratados mediante osteotomía Fulkerson más injerto óseo tricortical, entre 2001 y 2011. Materiales y métodos: Se realizó un estudio de cohorte retrospectiva única de pacientes con artrosis patelofemoral grado IV secundaria a malalineamiento patelofemoral que fueron tratados mediante osteotomía Fulkerson más injerto óseo tricortical entre 2001 y 2011. Los resultados fueron evaluados mediante la aplicación de la escala funcional de Lysholm modificada por Fulkerson y la escala visual análoga para el dolor (EVA). El seguimiento promedio fue de 44,0 ± 26,8 meses (mediana = 34,3 meses) con un rango entre 2 y 11,9 años. Resultados: Un total de 38 pacientes (45 rodillas, 7 bilaterales) fueron tratados con la técnica descrita. El más frecuente fue el género femenino con 92...

Physicochemical characterization of six commercial hydroxyapatites for medical-dental applicatons as bone graft

Conz,Marcio Baltazar; Granjeiro,José Mauro; Soares,Gloria de Almeida
Fonte: Faculdade De Odontologia De Bauru - USP Publicador: Faculdade De Odontologia De Bauru - USP
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/06/2005 EN
Relevância na Pesquisa
66.23%
The aim of this work was to characterize six hydroxyapatites in granular form for applications in medicine and dentistry as bone graft and to compare with manufacturers' specification. These samples were produced by four different manufacturers, and all of them are easily available in the Brazilian market. Physicochemical characterization was carried out by using electron microscopy (SEM), X-ray diffraction (XRD), infrared spectroscopy (FTIR) and surface area (BET) measurements. The results show that just one hydroxyapatite sample exhibited characterisitics in perfect agreement with the manufacturers' specifications. The studied parameters, namely crystallinity, surface area and composition may be used to estimate hydroxyapatite's biodegradability and as a criterion for quality control.

Caracterização físico-química de seis hidroxiapatitas comerciais para aplicações médico-odontológicas como material de enxerto; Physicochemical characterization of six commercial hydroxyapatites for medical-dental applicatons as bone graft

Conz, Marcio Baltazar; Granjeiro, José Mauro; Soares, Gloria de Almeida
Fonte: Universidade de São Paulo. Faculdade de Odontologia de Bauru Publicador: Universidade de São Paulo. Faculdade de Odontologia de Bauru
Tipo: info:eu-repo/semantics/article; info:eu-repo/semantics/publishedVersion; ; Formato: application/pdf
Publicado em 01/06/2005 ENG
Relevância na Pesquisa
66.23%
O objetivo desse trabalho foi caracterizar seis hidroxiapatitas granulares para aplicação em área médico-odontológica como material de enxerto. Estes materiais foram produzidos por quatro diferentes fabricantes e são todos facilmente disponíveis no mercado brasileiro. A caracterização físico-química foi realizada por meio de microscopia eletrônica de varredura, difração de raios-X, espectroscopia de infravermelho e área superficial específica (BET). Os resultados mostraram que apenas um dos produtos teve a caracterização perfeitamente de acordo com a especificação do fabricante. Os parâmetros de cristalinidade, área superficial e composição podem ser usados para estimar a biodegradabilidade da hidroxiapatita e como critério de controle de qualidade desses materiais.; The aim of this work was to characterize six hydroxyapatites in granular form for applications in medicine and dentistry as bone graft and to compare with manufacturers' specification. These samples were produced by four different manufacturers, and all of them are easily available in the Brazilian market. Physicochemical characterization was carried out by using electron microscopy (SEM), X-ray diffraction (XRD), infrared spectroscopy (FTIR) and surface area (BET) measurements. The results show that just one hydroxyapatite sample exhibited characterisitics in perfect agreement with the manufacturers' specifications. The studied parameters...

Autologous intramedullary bone graft harvesting as an alternative to conventional harvesting methods

Sprong,Francois; Snyckers,Christian Hugo; Birkholtz,Franz Friedrich
Fonte: SA Orthopaedic Journal Publicador: SA Orthopaedic Journal
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/01/2011 EN
Relevância na Pesquisa
66.37%
Conventional bone graft harvesting using the iliac crest is often cited as having significant donor site morbidity and complications. A technique has become available in the form of intramedullary harvesting, using a reamerirrigationaspiration (RIA) system. It is hailed as a safe alternative, with minimal donor site morbidity and pain. This study presents a retrospective case series of 16 patients where the RIA system was used as a harvesting technique from June 2008 to January 2010. This technique involves harvesting autograft from the femoral canal (anterograde or retrograde) by reaming the intramedullary cavity only once. A single surgeon performed the operations over a 24month period. Fluoroscopy was used to size and measure the width of the canal and to confirm guide wire placement. Outcomes evaluated were postoperative pain perception and patient satisfaction. Bone harvest volumes, intraand postoperative complications and bony union were noted. Telephonic interviews were conducted in all 16 cases. The average age of the patients was 31 years (15-55 years). The femoral canal was used as the donor site in all the patients. The mean postoperative followup period was 18.8 months (8-27 months). The average amount of bone harvested was 39.6 cc (20-70 cc). Two technical complications were encountered intraoperatively and there were no systemic complications due to reaming. Although The RIA system was found to be a safe technique...