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1.
Rev. cir. traumatol. buco-maxilo-fac ; 23(2): 17-25, abr./jun 2023. ilus
Article in Portuguese | LILACS, BBO | ID: biblio-1537357

ABSTRACT

Introdução: A osteotomia Le Fort I possibilita a correção de deformidades dentofaciais que envolvem o terço médio da face. Para sua fixação, convencionou-se o emprego de quatro mini-placas nos pilares zigomático-maxilar e nasomaxilar. Propôs-se então, a dispensa da fixação do segmento posterior, surgindo questionamentos relacionados à capacidade biomecânica do sistema. Objetivos: Comparar o estresse biomecânico gerado em três meios distintos de fixação da osteotomia Le Fort I frente ao movimento de avanço sagital linear maxilar de 7mm. Metodologia: Trata-se de uma pesquisa experimental laboratorial, utilizando-se da análise de elementos finitos como ferramenta analítica, a fim de constatar qual das técnicas sofrerá maior estresse biomecânico. Resultados: Constatou-se que o estresse biomecânico gerado é maior quando aplicado em 4 pontos do que quando aplicado em apenas 2 pontos. Conclusão: Os resultados obtidos fornecem informações aos cirurgiões sobre a real necessidade do uso de fixação adicional de acordo com o método de fixação planejado. No entanto, deve ser interpretado de forma cautelosa, considerando-se as limitações deste estudo. Sendo assim, uma análise incipiente, que tem como intuito o fornecimento de evidência científica de grande significância.


Introducción: La osteotomía Le Fort I permite la corrección de deformidades dentofaciales que involucran el tercio medio de la cara. Para su fijación se acordó utilizar cuatro miniplacas en los pilares cigomaticomaxilar y nasomaxilar. Entonces se propuso prescindir de la fijación del segmento posterior, planteando interrogantes relacionados con la capacidad biomecánica del sistema. Objetivos: Comparar el estrés biomecánico generado en tres medios diferentes de fijación de la osteotomía Le Fort I frente a un movimiento de avance sagital lineal maxilar de 7mm. Metodología: Se trata de una investigación experimental de laboratorio, utilizando como herramienta analítica el análisis de elementos finitos, con el fin de comprobar cuál de las técnicas sufrirá un mayor estrés biomecánico. Resultados: Se encontró que el estrés biomecánico generado es mayor cuando se aplica en 4 puntos que cuando se aplica solo en 2 puntos. Conclusión: Los resultados obtenidos brindan información a los cirujanos sobre la necesidad real de utilizar fijación adicional de acuerdo al método de fijación planificado. Sin embargo, debe interpretarse con cautela, considerando las limitaciones de este estudio. Por tanto, un análisis incipiente, que pretende aportar evidencias científicas de gran trascendencia.


Introduction: The Le Fort I osteotomy allows the correction of dentofacial deformities involving the middle third of the face. For its fixation, it was agreed to use four mini plates on the zygomaticomaxillary and nasomaxillary pillars. It was then proposed to dispense with the fixation of the posterior segment, raising questions related to the biomechanical capacity of the system. Objectives: To compare the biomechanical stress generated in three different means of fixation of the Le Fort I osteotomy against a 7mm maxillary linear sagittal advancement movement. Methodology: This is an experimental laboratory research, using finite element analysis as an analytical tool, in order to verify which of the techniques will suffer greater biomechanical stress. Results: It was found that the biomechanical stress generated is greater when applied to 4 points than when applied to only 2 points. Conclusion: The results obtained provide information to surgeons about the real need to use additional fixation according to the planned fixation method. However, it should be interpreted with caution, considering the limitations of this study. Therefore, an incipient analysis, which aims to provide scientific evidence of great significance.


Subject(s)
Osteotomy, Le Fort , Finite Element Analysis , Orthognathic Surgery , Fracture Fixation, Internal
2.
Rev. cuba. estomatol ; 59(2): e4122, abr.-jun. 2022. graf
Article in Spanish | LILACS, CUMED | ID: biblio-1408391

ABSTRACT

Introducción: Las lesiones traumáticas maxilofaciales son un problema de salud importante en todo el mundo. Suponen una carga para la salud pública. Objetivo: Reflexionar sobre la necesidad de combinar en el contexto cubano principios y recursos clásicos y modernos en el manejo de fracturas tipo Le Fort. Comentarios principales: El tratamiento de las fracturas faciales ha evolucionado mucho a lo largo de los años. Tradicionalmente, el alambre de acero inoxidable se utilizaba para la osteosíntesis en cirugía maxilofacial hasta la aparición de las miniplacas. Los sistemas de osteosíntesis de titanio son actualmente los de elección en cirugía maxilofacial. A pesar de sus ventajas indiscutibles, en los países en desarrollo ocasionalmente no se cuenta con todo el equipamiento necesario para su empleo. Consideraciones globales: El manejo del trauma maxilofacial se centra en la reobtención de la forma y la función original de la región afectada. Sin vulnerar los principios teóricos de manejo de fracturas tipo Le Fort, se impone de los profesionales cubanos la búsqueda de soluciones en concordancia con la disponibilidad de recursos. La unión de técnicas clásicas y recursos modernos como las suspensiones craneofaciales alámbricas, los arcos barra y los tornillos de fijación maxilomandibular puede ser una alternativa terapéutica confiable(AU)


Introduction: Traumatic maxillofacial lesions are an important global health problem, as well as a public health burden. Objective: Reflect on the need to combine classical and modern principles and resources in the management of Le Fort fractures in the Cuban context. Main remarks: Treatment of facial fractures has evolved considerably through the years. Before the appearance of miniplates, stainless steel wire was used for osteosynthesis in maxillofacial surgery. Titanium osteosynthesis systems are currently the systems of choice in maxillofacial surgery. Despite their undeniable advantages, developing countries occasionally do not have all the equipment required for their use. General considerations: Management of maxillofacial trauma is aimed at recovering the original form and function of the affected area. Without disregarding the theoretical principles of the management of Le Fort fractures, Cuban professionals should search for solutions in keeping with the resources available. The combination of classical techniques and modern resources, such as wired craniofacial suspensions, bar arches and maxillomandibular fixation screws, may be a reliable therapeutic alternative(AU)


Subject(s)
Humans , Surgery, Oral/methods , Jaw Fixation Techniques/adverse effects , Fractures, Bone/therapy , Costs and Cost Analysis , Fracture Fixation, Internal/methods
3.
Int. j. odontostomatol. (Print) ; 14(2): 167-171, June 2020. graf
Article in English | LILACS | ID: biblio-1090670

ABSTRACT

The naso-orbito-ethmoidal region is composed of delicate bones and when fractured may result in significant aesthetic-functional impairment. Diagnosis through clinical and imaging findings is extremely important for surgical planning. This study aims to report a case of type III fracture of the naso-orbito-ethmoidal region. Patient D.R.S., female, 13 years old, attended the emergency department of Hospital dos Fornecedores de Cana de Piracicaba (HFCP) - SP with complaint of pain in the fronto-nasal region and respiratory distress after trauma in face of baseball bat. Physical examination showed edema and short blunt injury in the region of the nasal dorsum and frontal region, bilateral periorbital hematoma, hyposphagma in right eye and traumatic telecanthus. When analyzing the computed tomography, it was observed fracture of the nasal bones, also affecting the medial wall of the orbit. The procedure was osteosynthesis of the fractures and reconstruction of the nasal dorsum. The fracture traces were exposed from coronal access, reduction of fractures and use of calvarial bone graft for nasal dorsum reconstruction. The fracture and the graft were fixed with plates of 1,6mm. Postoperative computed tomography analysis showed good graft positioning, but there was still a slight sinking of the left lateral wall of the nose. In a second moment another surgical intervention was done to reduce this wall and an internal containment device was installed. Currently the patient is in a state of observation and a follow-up period of 665 days. In cases of complex nasoorbito-ethmoidal fractures early diagnosis and treatment is essential to minimize sequelae and provide a better aesthetic and functional result.


La región etmoidal nasoorbital está compuesta de huesos delicados y, cuando se fractura, puede provocar una lesión estética-funcional significativa. El diagnóstico mediante hallazgos clínicos y de imagen es de suma importancia para la planificación quirúrgica. El paciente D.R.S., mujer, 13 años, leucoderma, asistió al servicio de emergencia del Hospital de Proveedores de Caña de Azúcar de Piracicaba quejándose de dolor en la región frontal-nasal y dificultad para respirar después de un traumatismo en la cara con un palo. El examen físico reveló edema y lesión contundente en el dorso nasal y la región frontal, hematoma periorbitario bilateral, hiposfagma del ojo derecho y telecanto traumático. Al analizar la tomografía computarizada se observó fractura de los huesosnasales en libro abierto, afectando también la pared medial de la órbita. El enfoque aplicado fue la osteosíntesis de fracturas y la reconstrucción del dorso nasal. Los rastros de fractura se expusieron del abordaje coronal, se redujeron las fracturas y se usaron injertos de casquete para reconstruir el dorso nasal. La fractura y el injerto se fijaron con placas de sistema de 1,6 mm y se realizó la cantopexia de los ligamentos cantales mediales. Se requirió cirugía reparadora secundaria para la corrección de la pared lateral de la nariz, que persistió en el postoperatorio. Actualmente el paciente se encuentra en un estado de conservación y período de seguimiento de 665 días. En casos de fracturas nasoorbitales-etmoidales complejas, el diagnóstico y el tratamiento tempranos son esenciales para minimizar las secuelas y proporcionar un mejor resultado estético y funcional.


Subject(s)
Humans , Female , Adolescent , Skull Fractures/surgery , Ethmoid Bone/surgery , Open Fracture Reduction/methods , Nasal Bone/surgery , Orbital Fractures/surgery , Skull Fractures/diagnostic imaging , Tomography, X-Ray Computed , Ethmoid Bone/injuries , Fracture Fixation , Nasal Bone/injuries
4.
Acta ortop. bras ; 27(3): 136-140, May-June 2019. tab, graf
Article in English | LILACS-Express | LILACS | ID: biblio-1010960

ABSTRACT

ABSTRACT Objective: To evaluate the mechanical behavior of different geometry bone block grafts in wooden models. Methods: Constructs with rectangular (G1) and trapezoidal (G2) profile "grafts", fixed with 3.5 mm 8-hole dynamic compression plates were submitted to non-destructive bending, with the load applied alternately on the same surface as that of the plate fixation (upper) and on the opposite surface (lower), and torsion tests. A 50 N maximum load for bending and a 5° maximum deformation for torsion were considered. Rigidity (N/mm) was recorded for the former and torque (N.m) was recorded for the latter. Results: Rigidity was consistently higher in G2 than in G1, but not significantly so for all comparisons. The exception was for the load applied on the same surface of plate fixation, significantly higher in G1 than in G2. Torque was higher in G1, but not significantly so. Conclusion: The two different-profile "grafts" present a similar mechanical behavior and can be indistinctly used in clinical practice. Level of evidence V, specialist's opinion based on basic studies.


RESUMO Objetivo: Avaliar o comportamento mecânico de enxertos ósseos em blocos com geometrias diferentes usando modelos de madeira. Métodos: Montagens com "enxertos" de perfil retangular (G1) e trapezoidal (G2), fixadas com placas de compressão dinâmica de 3,5 mm e oito orifícios, foram submetidas a ensaios não destrutivos de flexão, com a carga aplicada alternativamente na mesma superfície de fixação da placa (superior), na superfície oposta (inferior) e de torsão. Foram consideradas uma carga máxima de 50 N para a flexão e uma deformação máxima de 5° para a torsão. Foram registrados o desvio (mm) e a rigidez (N/mm) para o primeiro e o torque (N.m) para o segundo. Resultados: A rigidez foi consistentemente maior em G2 que em G1, mas não significantemente para todas as comparações. A exceção foi para a carga aplicada na mesma superfície da fixação com a placa, significantemente maior em G1 que em G2. O torque foi mais elevado em G1, mas não significantemente. Conclusão: Os dois "enxertos" de perfis diferentes apresentam comportamento mecânico semelhante, podendo ser utilizados indistintamente na prática clínica. Nível de evidência V; opinião de especialista baseada em matérias básicas.

5.
Rev. bras. ortop ; 54(1): 73-77, Jan.-Feb. 2019. graf
Article in English | LILACS | ID: biblio-1003593

ABSTRACT

Abstract Humeral shaft fractures combined with elbow dislocation and fracture of the distal third of the bones of the forearm are uncommon. No description of this simultaneous association has been found in the same patient. Some studies report the association of these two lesions; however, no reports on the three ipsilateral lesions have been found at the PubMed, Lilacs and Bireme databases. The present report describes a case that occurred in a 13-yearold boywho suffered a fall froma height of approximately threemeters andwas admitted to a trauma hospital. Radiographs showed an ipsilateral humeral shaft fracture combinedwith elbowdislocation anda fracture of thedistal-third of thebonesof the forearm.Undergeneral anesthesia, the injurieswere readily reduced by closedmanipulation, obtaininga satisfactory reduction of the injuries. Following this, an antebrachiopalmar splint and a commercial Velpeau shoulder immobilizer for the treatment of the humerus diaphyseal fracture were used. After 1 week, the patient presented non-alignment of the diaphyseal fracture of the humerus and was submitted to surgical treatment with flexible retrograde intramedullary nailing, antebrachiopalmar cast, and a commercial Velpeau shoulder immobilizer.


Resumo A fratura da diáfise do úmero associada a luxação posterolateral do cotovelo e fratura de terço distal dos ossos do antebraço é uma lesão rara, não relatada na literatura pesquisada. Alguns estudos reportam a associação de duas dessas lesões, porém não foram encontrados relatos com as três ipsilateralmente nas bases PubMed, Lilacs e Bireme. Os autores apresentam o caso de um paciente de 13 anos, do sexo masculino, comhistória de queda de aproximadamente três metros de altura. Foi atendido em um hospital terciário de referência em traumatologia com diagnóstico de fratura diafisária do úmero associada a luxação do cotovelo, lesão da placa fisária do rádio e fratura de terço distal da ulna ipisilateral esquerda. O paciente foi submetido a redução incruenta de todas as lesões sob sedação anestésica; posteriormente à redução, optou-se pelo uso de tala antebraquiopalmar e tipoia comercial tipo Velpeau como tratamento da fratura diafisária de úmero. Após uma semana, o paciente apresentou desvio da fratura diafisária do úmero, foi submetido a tratamento cirúrgico com hastes flexíveis de forma retrógrada, gesso antebraquiopalmar e tipoia comercial do tipo Velpeau.


Subject(s)
Humans , Male , Adolescent , Bone Nails , Elbow , Fracture Fixation, Internal , Humeral Fractures
6.
Rev. habanera cienc. méd ; 17(6): 943-948, nov.-dic. 2018. graf
Article in Spanish | LILACS, CUMED | ID: biblio-991299

ABSTRACT

Introducción: Las fracturas de cadera son muy frecuentes en el anciano, la primera fase de consolidación de una fractura es el hematoma creado a este nivel, si éste se enriquece con células madre adultas autólogas podría disminuir el tiempo de consolidación de la fractura debido a la gran capacidad que tienen estas células para transformarse en otros tipos de tejido. Objetivo: Evidenciar las ventajas del implante de las células madre en un paciente con fractura reciente de cadera. Presentación del caso: paciente con fractura de cadera que se operó en las primeras 24 horas y que durante su intervención se le implantaron células monoculares (células madre) obtenidas de su pelvis. Conclusiones: Se demostró la factibilidad de dicho proceder y la buena evolución del paciente, sin complicaciones y una consolidación precoz(AU)


Introduction: Hip fractures are very common in the elderly. It is known that the first phase of fracture healing is a local hematoma, and if it is enriched with autologous stem cells, hip fracture healing time could be diminished due to the great capacity these cells have to turn into other types of tissues. Objective: To show the advantages of the stem cells implant in a patient with a hip fracture Case presentation: A patient with a hip fracture underwent surgery during the first 24 hours after fracture and during the surgical procedure, monocular stem cells obtained from his pelvis were implanted. Conclusions: The feasibility of the stem cells implant in a hip fracture without complications and earlier healing was demonstrated(AU)


Subject(s)
Hematopoietic Stem Cell Transplantation/methods , Hip Fractures/therapy , Cell Transplantation
7.
Rev. méd. Hosp. José Carrasco Arteaga ; 10(2): 170-174, Jul 2018. Imagenes
Article in Spanish | LILACS | ID: biblio-1000411

ABSTRACT

INTRODUCCIÓN: La diabetes mellitus es un importante problema de salud pública, según la Organización Mundial de la Salud, 422 millones de adultos en todo el mundo en 2014. En 2012 provocó 1.5 millones de muertes a nivel mundial; es la primera causa de amputación no traumática en miembros inferiores y las infecciones del pie ocurren con alta frecuencia en pacientes mal controlados. Este caso muestra la reconstrucción de defectos de partes blandas en el tercio inferior pierna, talón, maléolos y pie a través de la descripción del colgajo sural reverso. En este estudio se discuten las ventajas y desventajas de la utilización de esta técnica. CASO CLÍNICO: Paciente de sexo femenino 56 años de edad con antecedentes de Diabetes Mellitus tipo 2 mal controlada, que sufrió una fractura de tobillo izquierdo tratada con osteosíntesis; durante el postoperatorio acudió a emergencia, por presentar dolor de gran intensidad en tobillo izquierdo, fiebre, dehiscencia de herida quirúrgica, acompañada de secreción serosa. EVOLUCIÓN: La paciente luego de varias limpiezas quirúrgicas y cambios de terapia de cierre asistido por presión negativa, se consigue controlar la infección, con persistencia del defecto de cobertura ósea y del material de osteosíntesis. Se presentaron complicaciones adicionales como la rigidez articular, atrofia muscular; se decidió realizar reconstrucción del tercio distal del pie usando colgajo fasciocutáneo sural de flujo reverso, que evolucionó satisfactoriamente, consiguiendo cubrir el defecto con tejido biológico. CONCLUSIÓN: El colgajo sural de flujo reverso, es una técnica reproducible, que permite cubrir defectos de cobertura en tercio distal de pierna y tobillo; acortar los tiempos de hospitalización, especialmente cuando hay exposición ósea o de material de osteosíntesis.


BACKGROUND: Diabetes mellitus is a major public health problem, according to the World Health Organization, 422 million adults worldwide in 2014. In 2012, it caused 1.5 million deaths worldwide. Diabetes is the leading cause of non-traumatic amputation in lower limbs and foot infections occur with high frequency in poorly controlled patients. This case shows the reconstruction of soft tissue defects in the lower third leg, heel, malleoli and foot through the description of the reverse sural flap. In this study the advantages and disadvantages of the use of this technique are discussed. CASE REPORT: A 56-year-old female patient with a poorly controlled history of Diabetes Mellitus type 2, who suffered a fracture of the left ankle treated with osteosynthesis, and who during the postoperative period attended emergency orthopedics and traumatology, due to severe pain in the left ankle, fever, dehiscence of surgical wound, accompanied by serous secretion. EVOLUTION: The patient, after several surgical cleanings and changes in closure therapy assisted by negative pressure, manages to control the infection, with persistence of the bone coverage defect and the osteosynthesis material. There were additional complications such as joint stiffness, muscle atrophy; it was decided to reconstruct the distal third of the foot using a reverse flow sural fasciocutaneous flap, which evolved satisfactorily, managing to cover the defect with biological tissue. CONCLUSIONS: The sural flap of reverse flow is a reproducible technique that allows to cover coverage defects in the distal third of the leg and ankle; shorten hospitalization times, especially when there is bone exposure or osteosynthesis material.


Subject(s)
Female , Sural Nerve/blood supply , Perforator Flap/trends , Fracture Fixation, Internal/trends , Ankle Fractures/complications
8.
Rev. bras. ortop ; 53(3): 267-275, May-June 2018. tab, graf
Article in English | LILACS | ID: biblio-959137

ABSTRACT

ABSTRACT Objective: Analyze the percutaneous fixation technique for scaphoid fractures in the waist of the scaphoid and the proximal pole, and demonstrate its result. Methods: A retrospective cross-cohort study conducted from January 2005 to April 2015, aiming at the consolidation time, epidemiological profile, level of function, return to work, and complications. Results: Twenty-eight patients were selected, with a mean of eight weeks of follow-up. They presented a mean age of 30.5 years, male prevalence (25 patients; 89.2%), and no differences between dominant and non-dominant sides. The mean time from diagnosis was 4.16 weeks, but in three cases of fibrous union, the pre-operative period was over one year. The most frequent mechanism of injury was a fall on the outstretched hand, in 22 cases (78.5%). Of all fractures, 24 cases were in the waist (85.8%) and four were of the proximal pole (14.2%); seven patients had displacement (25%). There was consolidation in 26 cases (92.8%) with a mean of 7.5 weeks after surgery. In cases of non-union, radiological follow-up was up to 24 weeks, requiring a new surgical intervention. Conclusions: Percutaneous fixation is an excellent, reproducible technique that allows early active mobility of the wrist with a low complication rate, although it requires a learning curve.


RESUMO Objetivo: Analisar a técnica de fixação percutânea das fraturas do escafoide em seu terço médio e terço proximal e demonstrar seu resultado Métodos: Estudo retrospectivo de coorte transversal, feito de janeiro de 2005 a abril de 2015, com vistas ao tempo de consolidação, perfil epidemiológico, grau de função, retorno às atividades laborais e complicações. Resultados: Foram selecionados 28 pacientes, com seguimento médio de oito semanas. Este estudo evidenciou uma idade média de 30,5 anos, prevalência do sexo masculino em 25 pacientes (89,2%) e ausência de lado dominante. O tempo médio de diagnóstico foi de 4,16 semanas, porém três casos de união fibrosa apresentaram período pré-operatório superior a um ano. O mecanismo de trauma mais frequente foi a queda sobre o punho em 22 casos (78,5%). Das fraturas, 24 casos foram do terço médio (85,8%) e quatro casos do polo proximal (14,2%), sete casos apresentavam desvio (25%). Houve consolidação de 26 casos (92,8%) com tempo médio de 7,5 semanas de pós-operatório. Nos casos de não consolidação radiológica, o seguimento foi de até 24 semanas, foi necessária uma nova intervenção cirúrgica. Conclusões: A fixação percutânea é uma ótima maneira de tratar esse tipo de fratura, reprodutível, permite a mobilidade ativa precoce do punho com baixo índice de complicações, embora exija curva de aprendizagem.


Subject(s)
Humans , Male , Female , Bone Screws , Scaphoid Bone , Fractures, Bone , Fracture Fixation, Internal
9.
RGO (Porto Alegre) ; 66(1): 88-95, Jan.-Mar. 2018. graf
Article in English | LILACS, BBO | ID: biblio-896065

ABSTRACT

ABSTRACT Injuries to the face represent a significant risk to the health of the individual, mainly because of its significance, both functional, because it houses sensory organs and part of the respiratory and digestive systems, as well as esthetic. In this scenario, gunshot wounds in this location cause great concern on account of the magnitude of the damage, and the Oral and Maxillofacial Surgery and Traumatology team must act so that the treatment enables the rehabilitation of the patient in the shortest possible time, with a minimum of complications and sequelae. The objective of this study is to report a clinical case of a 19-year-old female patient with a comminuted fracture of the mandible body caused by a firearm projectile, treated immediately with stable internal fixation using the 2.00 mm plate-screw system for simplification of the fracture and a 2.4 mm reconstruction locking-plate on the bone gap. Relevant aspects of the surgical technique and tactics are reviewed and long-term follow-up of the patient is presented.


RESUMO As lesões em face representam um grande agravo à saúde do indivíduo, principalmente pela sua significância, tanto funcional, por abrigar órgãos sensitivos e parte dos sistemas respiratório e digestório, quanto estético. Neste cenário, ferimentos por arma de fogo neste local, geram grande preocupação pela magnitude de seus danos, devendo a equipe de Cirurgia e Traumatologia Bucomaxilofacial agir para que o tratamento possibilite a reabilitação do paciente no menor tempo possível, com o mínimo de complicações e sequelas. O objetivo desse trabalho é relatar um caso clínico de uma paciente de 19 anos de idade, apresentando uma fratura cominutiva, com perda de substância, em corpo de mandíbula por projétil de arma de fogo, tratada de forma imediata, com fixação interna estável, utilizando o sistema placa-parafuso 2,0 mm para a simplificação da fratura e placa de reconstrução 2,4 mm locking sobre a lacuna óssea. Aspectos relevantes da técnica e tática cirúrgica são revistos e o acompanhamento da paciente em longo prazo é apresentado.


Subject(s)
Ambient Intelligence
10.
Rev. bras. ortop ; 50(5): 509-514, set.-out. 2015. tab, graf
Article in Portuguese | LILACS | ID: lil-766244

ABSTRACT

Comparar os parâmetros mecânicos entre dois métodos de estabilização por com pressão: placa de compressão axial de 1,5 mm com o parafuso cônico de compressão usado como tutor intramedular. Métodos: Foram usados modelos de poliuretano (Sawbone(r)) que simulam a fratura da falange proximal transversa, divididos em três grupos (placa lateral, parafuso cônico, sem implante). Resultados: Há necessidade de uma maior força para resultar na fadiga da síntese com para fuso intramedular. Comprova-se, assim, a supremacia mecânica desse sobre o modelo com a placa lateral. Conclusão: A estabilização com o parafuso Acutrak(r), no tratamento das fraturas no modelo adotado neste ensaio, apresenta resultados mecânicos superiores e estatisticamente sig nificativos em comparacão com a técnica de compressão axial com o uso da placa lateral (Aptus Hand (r)).


To compare the mechanical parameters between two methods for stabilization through compression: 1.5 mm axial compression plate versus conical compression screw used as an intramedullary tutor. METHODS: Polyurethane models (Sawbone(r)) that simulated transverse fractures of the proximal phalanx were used. The models were divided into three groups: lateral plate, conical screw and no implant. RESULTS: Greater force was needed to result in fatigue in the synthesis using an intramedullary plate. Thus, this model was proven to be mechanically superior to the model with the lateral plate. CONCLUSION: Stabilization using the Acutrak(r) screw for treating fractures in the model used in this trial presents mechanical results that are statistically significantly superior to those from the axial compression technique using the lateral plate (Aptus Hand(r)).


Subject(s)
Finger Injuries , Fracture Fixation , Fracture Fixation, Internal , Hand Injuries
11.
Rev. bras. ortop ; 50(4): 383-388, July-Aug. 2015. tab, ilus
Article in English | LILACS | ID: lil-761117

ABSTRACT

Demonstrar os resultados clínicos e funcionais do tratamento da fratura diafisária de úmero com uso das hastes de Ender. MÉTODOS: Foram avaliados 18 pacientes submetidos à osteossíntese da fratura diafisária de úmero com uso da haste de Ender. Além das avaliações clínicas e radiográficas, os pacientes com no mínimo um ano de seguimento foram avaliados pelos escores funcionais de Constant, American Shoulder and Elbow Surgeons (Ases), Mayo Clinic, Simple Shoulder Value (SSV) e quanto ao grau de satisfação com o resultado final. A técnica de fixação usada foi por via anterógrada e percutânea. RESULTADOS: Todos os pacientes obtiveram consolidação da fratura, com média de 2,9 meses (variação de dois a quatro). A média do Score de Constant foi de 85,7 (variação de 54-100) e a do ASES de 95,9 (variação de 76-100) e todos obtiveram pontuação máxima pelo escore Mayo Clinic. CONCLUSÃO: A fixação das fraturas diafisárias do úmero com o uso da haste de Ender pela técnica percutânea demonstrou ser um método com resultados preliminares promissores.


To demonstrate the clinical and functional results from treatment of humeral diaphysis fractures using Ender nails. METHODS: Eighteen patients who underwent osteosynthesis of humeral diaphysis fractures using Ender nails were evaluated. In addition to the clinical and radiographic evaluations, patients with a minimum of one year of follow-up were assessed by means of the Constant, American Shoulder and Elbow Surgeons (ASES), Mayo Clinic and Simple Shoulder Value (SSV) functional scores, and in relation to the degree of satisfaction with the final result. The fixation technique used was by means of an anterograde percutaneous route. RESULTS: All the patients achieved fracture consolidation, after a mean of 2.9 months (ranging from 2 to 4 months). The mean Constant score was 85.7 (ranging from 54 to 100) and the mean ASES score was 95.9 (ranging from 76 to 100). All the patients achieved the maximum score on the Mayo Clinic scale. CONCLUSION: Fixation of humeral diaphysis fractures using Ender nails by means of a percutaneous technique was shown to be a method with promising preliminary results.


Subject(s)
Humans , Male , Female , Fracture Fixation, Internal , Fracture Fixation, Intramedullary , Humeral Fractures , Internal Fixators
12.
Braz. j. oral sci ; 10(4): 236-240, oct.-dec. 2011. tab
Article in English | LILACS, BBO | ID: lil-638381

ABSTRACT

Aim: To analyze gunshot wounds to the face, assessing the characteristics, immediate treatment,late treatment, complications and after effects. Methods: A retrospective observational study wascarried out involving 75 cases of victims of gunshot wounds to the face treated at the Oral andMaxillofacial Traumatology Unit of the Dr. Arthur Ribeiro de Saboya Hospital in the city of SãoPaulo (Brazil).Data analysis used the chi-square test with the level of significance set at 5% (p dd0.05). Results: There was a predominance of the 21-to-30-year-old age group (38.7%), malegender (92%) and wounds occurring due to assaults (37.3%). There was a predominance ofentry wounds on the left side of the face (58.5%). The most affected sites were the mandible(50.7%), maxilla (18.3%), zygomatic region (7.0%), eye socket (4.2%) and nose (1.4%).Comminuted fractures (88.2%) and simple fractures (10.3%) were recorded. No fracture occurredin 1.5% of the cases. The predominant treatment was rigid internal fixation (RIF) (57.2%),followed by exploratory surgery (23.2%) and conservative treatment (19.6%). Among thecases in which the RIF system was used, there was predominance in the mandible (64.0%). Thechi-square test revealed a significant correlation between the 2.4-mm RIF system and the mandiblein 48.0 % of cases. Conclusions: In conclusion, gunshot wounds tended to pierce the face,mainly affecting the mandible and caused comminuted fractures treated with rigid internal fixation.Immediate complications occurred in 25% of cases and after effects occurred in 11.7%.


Subject(s)
Fracture Fixation, Internal , Fractures, Comminuted , Wounds, Gunshot
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