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ABSTRACT Purpose: To evaluate the stability and efficacy of the double-flanged 5-0 polypropylene suture to fixate subluxated cataracts at 18 months and the possible complications of this new technique Methods: This technique uses a 5-0 polypropylene monofilament to create two flanges with a thermocautery, for fixation of a capsular tension segment to the sclera to fix the subluxated capsular bag. This technique was implemented in 17 eyes requiring intraocular lens implantation in a setting of zonular dialysis due to trauma, Marfan syndrome, microspherophakia, idiopathic disease, and post-phacoemulsification status. Results: Follow-up of the patients occurred at 18 months. Best-corrected visual acuity improved significantly from 0.85 to 0.39 (logMAR), whereas the spherical and cylindrical refractive errors and intraocular pressure remained stable from preoperation. No suture photodegradation or pseudophacodonesis were detected. Conclusion: The double-flanged 5-0 polypropylene suture transscleral bag fixation technique has shown favorable long-term outcomes in terms of bag intraocular lens/complex fixation and stability. In eyes with zonular weakness or dialysis, this technique appears to be a safe and knotless option for cataract surgery.
RESUMO Objetivo: Avaliar a estabilidade e eficácia da técnica double-flanged com sutura de 5-0 polipropileno para fixação de cataratas subluxadas aos 18 meses e as possíveis complicações desta nova técnica. Métodos: Esta técnica utiliza um monofilamento de polipropileno 5-0 para criar dois flanges com um termocautério para fixar um Segmento de Tensão Capsular na esclera a fim de estabilizar o saco capsular subluxado. Esta técnica foi implementada em 17 olhos que necessitavam do implante de lente intraocular em casos de diálise zonular devido a trauma, síndrome de Marfan, microesferofacia, subluxação idiopática ou pós-facoemulsificação que provocou subulxação do saco capsular intraoperatória. Resultados: O seguimento dos pacientes foi de 18 meses. A acuidade visual corrigida melhorou significativamente de 0,85 para 0,39 (logMAR), enquanto os erros de refração esféricos e cilíndricos e a pressão intraocular permaneceram estáveis. Nenhuma fotodegradação de sutura ou pseudofacodonese foi encontrada. Conclusão: A técnica double-flanged para fixação transescleral de saco capsular com sutura de 5-0 polipropileno mostrou resultados de estabilidade de longo prazo para o complexo lente/saco capsular. Então, aparenta ser uma opção segura para cirurgia de catarata, sem necessidade pontos, em olhos com fraqueza zonular ou diálise.
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Background: Multiple flexor tendon repair techniques have been developed over the last years. Despite all this, there is no standard technique that has proven to be superior to others, leading to great variability in the use of techniques in surgical practice. We describe a novel tendon repair technique and compare its biomechanical characteristics with 2 conventional techniques. Methods: Comparative experimental biomechanical study in ex vivo animal models. In all, 66 deep flexor tendons of the pig's front legs were taken and it's repair was performed by 1 of 3 techniques (helical 6-strand cruciate tendon repair, Adelaide tendon repair, or modified Kessler). These repairs were subjected to biomechanical study, measuring, and registering the ultimate tensile strength, load to 2-mm gap force, and stiffness. Results: The helical 6-strand cruciate tenorrhaphy compared with the Adelaide and modified Kessler techniques carries statistically significant greater ultimate tensile strength before failure (65.5, 46, and 36 N, respectively, P < .001). It also required a greater load to 2-mm gap force and is less stiff, allowing greater strain before failure. This technique does not generate significant changes in the dimensions of the tendons compared to the others, and there was no significant difference in the strength of repair between surgeons. Conclusions: The helical 6-strand cruciate tenorrhaphy is a novel technique, useful for the repair of flexor tendons in the hand that holds up the necessary forces to initiate early mobilization in the postoperative period and has better biomechanical properties than 2 standard techniques.
Assuntos
Técnicas de Sutura , Suturas , Animais , Fenômenos Biomecânicos , Humanos , Tendões/cirurgia , Resistência à TraçãoRESUMO
Many surgical techniques have been used to address unstable distal third clavicle fractures. Complications and the need for hardware removal are still a concern. We propose a surgical technical using high-strength sutures to restore vertical and horizontal stability in Neer type II and Neer type V distal-third clavicle fractures. It has been used in three cases; two type V and one type II. In all cases, bone healing was achieved uneventfully and all patients resumed their pre-injury activities including sports at sixmonths postoperatively. The coraco-clavicular loop and tension band suture technique is a simple procedure that allows vertical and horizontal stabilization of the fracture. It achieves good clinical results and it may be a costeffective alternative to other techniques although a longer series and longterm followup is required to adequately assess the results.
Se han descrito diferentes técnicas quirúrgicas para el tratamiento de las fracturas inestables del tercio distal de la clavícula. Las complicaciones asociadas y la necesidad de retirar los implantes siguen siendo motivo de preocupación. Proponemos una técnica quirúrgica que utiliza suturas de alta resistencia para restaurar la estabilidad vertical y horizontal en las fracturas del tercio distal de la clavícula de tipo II y V de la clasificación de Neer. Esta técnica se ha utilizado en tres casos; dos de tipo V y uno de tipo II. En todos se obtuvo la consolidación ósea y todos reanudaron sus actividades previas a la lesión, incluyendo actividad deportiva, a los seis meses de la cirugía. La técnica de cerclaje coracoclavicular y banda de tensión con sutura es un procedimiento sencillo que permite la estabilización vertical y horizontal de la fractura. Permite obtener buenos resultados clínicos y puede ser una alternativa coste-efectiva eficaz en el tratamiento de estas lesiones aunque se requiere una serie más larga y un seguimiento a largo plazo para evaluar adecuadamente los resultados.
Assuntos
Clavícula , Fraturas Ósseas , Placas Ósseas , Clavícula/cirurgia , Fixação Interna de Fraturas , Fraturas Ósseas/cirurgia , Humanos , Suturas , Resultado do TratamentoRESUMO
Resumen: Se han descrito diferentes técnicas quirúrgicas para el tratamiento de las fracturas inestables del tercio distal de la clavícula. Las complicaciones asociadas y la necesidad de retirar los implantes siguen siendo motivo de preocupación. Proponemos una técnica quirúrgica que utiliza suturas de alta resistencia para restaurar la estabilidad vertical y horizontal en las fracturas del tercio distal de la clavícula de tipo II y V de la clasificación de Neer. Esta técnica se ha utilizado en tres casos; dos de tipo V y uno de tipo II. En todos se obtuvo la consolidación ósea y todos reanudaron sus actividades previas a la lesión, incluyendo actividad deportiva, a los seis meses de la cirugía. La técnica de cerclaje coracoclavicular y banda de tensión con sutura es un procedimiento sencillo que permite la estabilización vertical y horizontal de la fractura. Permite obtener buenos resultados clínicos y puede ser una alternativa coste-efectiva eficaz en el tratamiento de estas lesiones aunque se requiere una serie más larga y un seguimiento a largo plazo para evaluar adecuadamente los resultados.
Abstract: Many surgical techniques have been used to address unstable distal third clavicle fractures. Complications and the need for hardware removal are still a concern. We propose a surgical technical using high-strength sutures to restore vertical and horizontal stability in Neer type II and Neer type V distal-third clavicle fractures. It has been used in three cases; two type V and one type II. In all cases, bone healing was achieved uneventfully and all patients resumed their pre-injury activities including sports at six-months postoperatively. The coraco-clavicular loop and tension band suture technique is a simple procedure that allows vertical and horizontal stabilization of the fracture. It achieves good clinical results and it may be a cost-effective alternative to other techniques although a longer series and long-term follow-up is required to adequately assess the results.
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Objective To evaluate different femoral fixation devices for medial patellofemoral ligament reconstruction and compare their effectiveness regarding fixation strength up to failure in porcine knees. Methods Thirty porcine knees were used, divided into three groups of 10 knees. The removed grafts were dissected from the extensor tendons of porcine feet. In each group, the graft was fixed to the femur with an interference screw, an anchor, or adductor tenodesis. The three methods were subjected to biomechanical tests using a universal Tensile testing machine at a speed of 20 mm/minute. Results The highest average linear resistance under lateral traction occurred in group 1, "screw fixation" (185.45 ± 41.22 N), followed by group 2, "anchor fixation" (152.97 ± 49, 43 N); the lower average was observed in group 3, "tenodesis fixation" (76.69 ± 18.90 N). According to the fixed error margin (5%), there was a significant difference between groups ( p < 0.001); in addition, multiple comparison tests (between group pairs) also showed significant differences. Variability was small, since the variance coefficient was lower than 33.3%. Conclusion Interference screws in bone tunnels and mountable anchors fixation with high resistance wire are strong enough for femoral fixation in porcine medial patellofemoral ligament reconstruction. Adductor tenodesis, however, was deemed fragile for such purpose.
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Abstract Objective To evaluate different femoral fixation devices for medial patellofemoral ligament reconstruction and compare their effectiveness regarding fixation strength up to failure in porcine knees. Methods Thirty porcine knees were used, divided into three groups of 10 knees. The removed grafts were dissected from the extensor tendons of porcine feet. In each group, the graft was fixed to the femur with an interference screw, an anchor, or adductor tenodesis. The three methods were subjected to biomechanical tests using a universal Tensile testing machine at a speed of 20 mm/minute. Results The highest average linear resistance under lateral traction occurred in group 1, "screw fixation" (185.45 ± 41.22 N), followed by group 2, "anchor fixation" (152.97 ± 49, 43 N); the lower average was observed in group 3, "tenodesis fixation" (76.69 ± 18.90 N). According to the fixed error margin (5%), there was a significant difference between groups (p < 0.001); in addition, multiple comparison tests (between group pairs) also showed significant differences. Variability was small, since the variance coefficient was lower than 33.3%. Conclusion Interference screws in bone tunnels and mountable anchors fixation with high resistance wire are strong enough for femoral fixation in porcine medial patellofemoral ligament reconstruction. Adductor tenodesis, however, was deemed fragile for such purpose.
Resumo Objetivo Avaliar diferentes dispositivos de fixação femoral na reconstrução do ligamento patelofemoral medial para comparar sua eficácia quanto à força de fixação até a falha em joelhos suínos. Métodos Foram ensaiados 30 joelhos de suínos subdivididos em 3 grupos de 10 joelhos. Os enxertos retirados foram dissecados de tendões extensores das patas dos suínos. Cada grupo teve o enxerto fixado ao fêmur com parafuso de interferência, âncora, ou tenodese no tendão adutor. Os 3 métodos foram submetidos à testes biomecânicos utilizando uma máquina universal de ensaio de tração com uma velocidade de 20 mm/min. Resultados Verificamos que a média mais elevada da resistência linear sob tração lateral (185,45 ± 41,22 N) ocorreu no grupo 1: "fixação por parafuso," seguido do grupo 2: "fixação por âncora" (152,97 ± 49,43 N), e a média foi menor no grupo 3: "fixação por tenodese" (76,69 ± 18,90 N). Para a margem de erro fixada (5%), comprovou-se a diferença significativa entre os grupos (p < 0,001) e também através dos testes de comparações múltiplas (entre os pares de grupos) verificou-se a ocorrência de diferenças significativas. A variabilidade expressada por meio do coeficiente de variação mostrou-se reduzida, já que a referida medida foi inferior a 33,3%. Conclusão O uso de parafusos de interferência no túnel ósseo de joelhos porcinos é suficientemente forte para fixação femoral na reconstrução do ligamento patelofemoral medial, assim como a fixação com âncoras montáveis com fio de alta resistência. Entretanto, a tenodese no tendão adutor mostrou-se frágil para essa finalidade.
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Animais , Dispositivos de Fixação Ortopédica , Suínos , Tendões , Tração , Efetividade , Fenômenos Biomecânicos , Osso e Ossos , Técnicas de Sutura , Transplantes , Modelos Animais , Tenodese , Articulação Patelofemoral , Fêmur , Ligamentos , MétodosRESUMO
Abstract Objective: The aim of this study is to compare the continuous and combined suturing techniques in regards to the needing epicardial pacing at the time of weaning from cardiopulmonary bypass (EP-CPB) and to evaluate permanent epicardial pacemaker (PEP) implantation in patients who had undergone surgical ventricular septal defect (VSD) closure. Methods: This single-centre retrospective survey includes 365 patients who had consecutively undergone VSD closure between January 2006 and October 2015. Results: The median age and weight of the patients were 15 months (range 27 days - 56.9 years) and 10 kg (range 3.5 - 100 kg), respectively. Continuous and combined suturing techniques were utilised in 302 (82.7%) and 63 (17.3%) patients, respectively. While 25 (6.8%) patients required EP-CPB, PEP was implanted in eight (2.2%) patients. Comparison of the continuous and combined suturing techniques regarding the need for EP-CPB (72% vs. 28%, P=0.231) and PEP implantation (87.5% vs. 12.5%, P=1.0) were not statistically significant. The rate of PEP implantation in patients with perimembraneous VSD without extension and perimembraneous VSD with inlet extension did not reveal significant difference between the suture techniques (P=1.0 and P=0.16, respectively). In both univariate and multivariate analyses, large VSD (P=0.001; OR 8.63; P=0.011) and perimembraneous VSD with inlet extension (P<0.001; OR 9.02; P=0.005) had a significant influence on PEP implantation. Conclusion: Both suturing techniques were comparable regarding the need for EP-CPB or PEP implantation. Caution should be exercised when closing a large perimembraneous VSD with inlet extension.
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Humanos , Masculino , Feminino , Recém-Nascido , Lactente , Pré-Escolar , Criança , Adolescente , Adulto , Pessoa de Meia-Idade , Adulto Jovem , Marca-Passo Artificial/estatística & dados numéricos , Estimulação Cardíaca Artificial/métodos , Técnicas de Sutura/estatística & dados numéricos , Comunicação Interventricular/cirurgia , Fatores de Tempo , Estimulação Cardíaca Artificial/estatística & dados numéricos , Modelos Logísticos , Reprodutibilidade dos Testes , Estudos Retrospectivos , Fatores de Risco , Resultado do Tratamento , Distribuição por Idade , Estatísticas não Paramétricas , Bloqueio Cardíaco/etiologia , Bloqueio Cardíaco/terapia , Comunicação Interventricular/complicaçõesRESUMO
Extensive wounds may not be able to heal by primary intention, due to the lack of tissue. Moreover, treatment of these wounds by secondary intention is more difficult in production animals, due to the high investment requirement and long recovery time. Therefore, new approaches that favor short-term recovery are desirable. This study reports the application of an elastic suture technique for the treatment of an extensive mammary wound. This technique was applied in a lactating ewe with gangrenous mastitis, resulting in extensive tissue necrosis and loss of mammary tissue. Extension of the wound made complete coaptation of the wound edges impossible. Elastic sutures were chosen as they allow a constant and moderate tension that gradually induces approximation of the skin edges. The wound showed a significant decrease in extension before removal of the stitches, demonstrating the successful application of this technique in wound closure surgery. The elastic suture is presented as a new management option for extensive wounds in the field of veterinary medicine.
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Feminino , Animais , Aloe , Cicatrização , Mastectomia/veterinária , Mastite/veterinária , Ovinos/lesões , Suturas/veterinária , Técnicas de Sutura/veterináriaRESUMO
Extensive wounds may not be able to heal by primary intention, due to the lack of tissue. Moreover, treatment of these wounds by secondary intention is more difficult in production animals, due to the high investment requirement and long recovery time. Therefore, new approaches that favor short-term recovery are desirable. This study reports the application of an elastic suture technique for the treatment of an extensive mammary wound. This technique was applied in a lactating ewe with gangrenous mastitis, resulting in extensive tissue necrosis and loss of mammary tissue. Extension of the wound made complete coaptation of the wound edges impossible. Elastic sutures were chosen as they allow a constant and moderate tension that gradually induces approximation of the skin edges. The wound showed a significant decrease in extension before removal of the stitches, demonstrating the successful application of this technique in wound closure surgery. The elastic suture is presented as a new management option for extensive wounds in the field of veterinary medicine.(AU)
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Animais , Feminino , Ovinos/lesões , Mastite/veterinária , Suturas/veterinária , Aloe , Cicatrização , Mastectomia/veterinária , Técnicas de Sutura/veterináriaRESUMO
ABSTRACT INTRODUCTION: Caudal septal dislocation is a respiratory and cosmetic problem. The correction of caudal septal dislocation is a challenging issue. Although different modalities have been described for the treatment, it is still controversial. OBJECTIVES: This study aims to describe a two-level suture technique which can be used to correct and stabilize the septum in the columellar pocket. METHODS: The caudal septum was fixed to the nasal spine with suturing, and an anterior columellar pocket was formed. Two septocolumellar sutures including superior and inferior were performed to correct the dislocated caudal septum and to increase the stability of caudal septum in the columellar pocket. RESULTS: Anterior rhinoscopy showed no recurrent deviation or dislocation in our patients. CONCLUSION: Our suture technique is an effective and easy-to-use method to correct the caudal septal dislocation. It can also be used to increase the stability of corrected septum by other techniques. A two-level suture technique increases the success of correction and reduces the risk of postoperative septal caudal luxation, stabilizing the superior portion of the caudal septum, in particular. Therefore, it would reduce the rate of redo surgeries.
Resumo Introdução: O desvio septal caudal é um problema respiratório e estético, e a sua correção é tarefa desafiadora. Embora tenham sido descritas diferentes modalidades para o tratamento, esse é ainda um tópico controverso. Objetivos: O presente estudo objetivou descrever uma técnica de sutura em dois níveis, que pode ser empregada na correção e estabilização do septo na bolsa columelar. Método: O septo caudal foi fixado à espinha nasal com suturas, após a realização de uma bolsa columelar anterior. Duas suturas septocolumelares, superior e inferior, foram aplicadas para a correção do desvio septal caudal e, também, para maior estabilidade do septo caudal na bolsa columelar. Resultados: Rinoscopia anterior não resultou em recorrência do desvio ou luxação em nossos pacientes. Conclusão: Nossa técnica de sutura é um método efetivo e de fácil uso para a correção do desvio septal caudal. A técnica também pode ser utilizada para aumentar a estabilidade de septos corrigidos por outras técnicas. A técnica de sutura em dois níveis aumenta o sucesso da correção e diminui o risco de luxação septal caudal, estabilizando, em particular, a parte superior do septo caudal. Portanto, nossa técnica diminui o percentual de reoperações.
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Humanos , Masculino , Feminino , Rinoplastia/métodos , Técnicas de Sutura , Septo Nasal/cirurgia , Septo Nasal/lesões , Deformidades Adquiridas Nasais/cirurgia , Seguimentos , Resultado do Tratamento , Ilustração MédicaRESUMO
INTRODUCTION: Caudal septal dislocation is a respiratory and cosmetic problem. The correction of caudal septal dislocation is a challenging issue. Although different modalities have been described for the treatment, it is still controversial. OBJECTIVES: This study aims to describe a two-level suture technique which can be used to correct and stabilize the septum in the columellar pocket. METHODS: The caudal septum was fixed to the nasal spine with suturing, and an anterior columellar pocket was formed. Two septocolumellar sutures including superior and inferior were performed to correct the dislocated caudal septum and to increase the stability of caudal septum in the columellar pocket. RESULTS: Anterior rhinoscopy showed no recurrent deviation or dislocation in our patients. CONCLUSION: Our suture technique is an effective and easy-to-use method to correct the caudal septal dislocation. It can also be used to increase the stability of corrected septum by other techniques. A two-level suture technique increases the success of correction and reduces the risk of postoperative septal caudal luxation, stabilizing the superior portion of the caudal septum, in particular. Therefore, it would reduce the rate of redo surgeries.
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Septo Nasal/lesões , Septo Nasal/cirurgia , Rinoplastia/métodos , Técnicas de Sutura , Feminino , Seguimentos , Humanos , Masculino , Ilustração Médica , Deformidades Adquiridas Nasais/cirurgia , Resultado do TratamentoRESUMO
O objetivo deste relato de caso é descrever uma nova técnica de refixação escleral, unilateral, de uma háptica cuja sutura escleral prévia rompeu-se, levando ao deslocamento da lente intraocular para o vítreo. Trata-se de um olho submetido anteriormente a dois transplantes de córnea, em que se buscou minimizar a manipulação intraocular e o trauma cirúrgico. Esta técnica consiste em realizar o procedimento em olho fechado, utilizando a mesma lente de fixação, sem a necessidade de externalizar as hápticas ou do uso de instrumentos cirúrgicos especiais. A perda de células endoteliais após o procedimento foi similar à observada após a facoemulsificação em pacientes com ceratoplastia penetrante. A técnica mostrou-se simples, segura, e, portanto, reprodutível, além de ser menos invasiva do que os métodos já descritos, permitindo a reabilitação visual precoce do paciente.
The purpose of this case report is to describe a new technique to re-establish a scleral fixation of one luxated haptic, which previous suture ruptured, causing the fall of the intraocular lens into the vitreous cavity. Considering that the patient underwent two penetrant keratoplasty surgeries, there was a major concern to cause minimal intraocular manipulation and less surgical trauma. This technique consists in a closed eye procedure using the fixation lens, without exposing the haptics or using special surgical instruments. The endothelial cell loss after the surgery was similar to that observed after phacoemulsification in eyes with penetrating keratoplasty. The technique proved to be simple, safe, and therefore reproducible, less invasive than the previously published methods and promoted the patient's early visual rehabilitation.
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Humanos , Masculino , Adolescente , Perda de Células Endoteliais da Córnea , Transplante de Córnea , Subluxação do Cristalino , Técnicas de SuturaRESUMO
RACIONAL: A ruptura da linha de grampos representa grave problema em operações gastrointestinais. Reforçar o grampeamento com sobressutura ou dispositivos biológicos é assunto controverso. OBJETIVO: Comparar a pressão de ruptura do grampeamento simples, com grampeamento com sobressutura e com grampeamento com Surgisis®. MÉTODO: Em um suíno anestesiado, foram criados dez segmentos intestinais com cada tipo de grampeamento. Esses segmentos foram insuflados até que rompessem e a pressão de ruptura foi medida para posterior comparação. RESULTADO: A pressão de ruptura da linha de grampeamento foi de 94 mmHg +/- 18,52mmHg no grupo do grampeamento simples; 87,5 mmHg +/- 18,59 mmHg no grupo de grampeamento com sobressutura; e 83,33mmHg +/- 23,04 mmHg no grupo de grampeamento com Surgisis®. Não houve diferença estatística entre os grupos. CONCLUSÕES: O reforço do grampeamento com sobressutura ou aplicação de Surgisis® não aumenta a resistência da linha de grampos em suíno.
BACKGROUND: Staple line leaks carry significant morbidity and mortality. Reinforcement is controversial. Several staple techniques have been described for this purpose. Oversuture and butressing material are more common. AIM: To compare these two ways of reinforcement and staple line without any reinforcement regarding the bursting pressure. METHOD: Ten segments of small bowel were created in a pig under general anesthesia. The bowel was inflatted until burst point and the pressure was measured. RESULTS: The staple line bursting pressure was 94 mmHg +/- 18,52mmHg in the stapler technique; 87,5 mmHg +/- 18,59mmHg in the oversuture and 83,33 mmHg +/- 23,04mmHg with Surgisis®. There was no statistic difference among the techniques. CONCLUSIONS: Oversuture or Surgisis® use did not increase the staple line resistance in pig.