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Rev. méd. Maule ; 37(2): 37-42, dic. 2022. ilus
Article in Spanish | LILACS | ID: biblio-1428343


Total hip arthroplasty (THA) is a safe and effective procedure in patients with end-stage ostheoarthritis. In the last years the indication for THA is increasingly in younger patients, associated with rising of life expectancy, this imply an increase in revision surgeries for various causes such as: aseptic loosening, fractures and infections. In this context and in view of the need to replace the femoral component, alternatives to the classic extended trochanteric osteotomy (ETO) arise, such as the anterior cortical window (ACW), which allows the rate of complications to be reduced with excellent results. We present the case of a 51-year-old patient who sustained one episode of dislocation, who required revision surgery due to aseptic loosenig, where the ACW was used for the extraction of the stem. In addition, a review of the literature was made to show advantages and complications regarding ETO.

Humans , Female , Middle Aged , Reoperation/methods , Arthroplasty, Replacement, Hip , Hip Prosthesis , Prosthesis Design , Prosthesis Failure , Periprosthetic Fractures/surgery , Femoral Fractures/surgery
Rev. bras. ortop ; 57(1): 120-127, Jan.-Feb. 2022. tab, graf
Article in English | LILACS | ID: biblio-1365755


Abstract Objectives Glenoid component failure is the main cause of total shoulder arthroplasty (TSA) revision, and component design seems to influence the failure rate. The aim of the present study was to clinically and radiographically (through X-rays and computed tomography scan) evaluate the results of TSA using a minimally cemented glenoid component. Methods Total should arthroplasties performed using the minimally cemented Anchor Peg (DuPuy Synthes, Warsaw, IN, USA) glenoid component between 2008 and 2013 were evaluated. University of California at Los Angeles (UCLA) scores were calculated, and standardized plain film and computed tomography images were obtained, at a minimum follow-up of 24 months. The presence of bone between the fins of the central component peg, which indicates its integration, was assessed on the images, as well the presence of radiolucent lines around the glenoid component. Results Nineteen shoulders in 17 patients were available for evaluation. According to the UCLA score, clinical results were satisfactory in 74% of cases and fair in 21% of cases. One patient had a poor result. Component integration was found in 58% of patients (total in 42% and partial in 16%). Radiolucent lines were observed in 52% of cases. No relationship was detected between component integration and clinical results. Conclusion Satisfactory clinical results were achieved in most patients undergoing TSA using a minimally cemented glenoid component. Radiolucent lines around the glenoid component are common, but do not interfere with the clinical results. Level of evidence IV; Case series; Treatment study.

Resumo Objetivos A falha do componente glenoidal é a principal causa de revisão da artroplastia total do ombro (ATO) e sua frequência parece ser influenciada pelo design do componente. O objetivo deste estudo foi a avaliação clínica e radiográfica (através de raios X e tomografia computadorizada) dos resultados da ATO com componente glenoidal minimamente cimentado. Métodos O presente trabalho analisou ATOs realizadas com componente glenoidal Anchor Peg (DuPuy Synthes, Warsaw, IN, EUA) minimamente cimentado entre 2008 e 2013. Por um período mínimo de acompanhamento de 24 meses, escores segundo critérios da University of California at Los Angeles (UCLA) e imagens padronizadas de radiografia simples e tomografia computadorizada foram analisadas. A presença de osso entre as aletas do pino do componente central, que é um indicador de sua integração, foi avaliada nas imagens, bem como a presença de linhas radiotransparentes ao redor do componente glenoidal. Resultados Dezenove ombros de 17 pacientes foram avaliados. De acordo com o escore da UCLA, os resultados clínicos foram satisfatórios em 74% dos casos e moderados em 21% dos casos. O resultado foi ruim em um paciente. A integração de componentes foi observada em 58% dos pacientes, sendo total em 42% e parcial em 16% dos casos. Linhas radiotransparentes foram observadas em 52% dos pacientes. Nenhuma relação entre a integração de componentes e os resultados clínicos foi detectada. Conclusão A maioria dos pacientes submetidos à ATO com componente glenoidal minimamente cimentado apresentou resultados clínicos satisfatórios. Linhas radiotransparentes ao redor do componente glenoidal são comuns, mas não interferem nos resultados clínicos Nível de evidência IV; Série de caso; Estudo terapêutico.

Humans , Male , Female , Middle Aged , Shoulder , Prosthesis Failure , Tomography , Radiographic Image Enhancement , Arthroplasty, Replacement
Article in Spanish | LILACS, BINACIS | ID: biblio-1399054


Introducción: Ante el aumento de las artroplastias de cadera en el último siglo, los defectos acetabulares graves son eventos cada vez más frecuentes. Su tratamiento representa un verdadero desafío, debido al déficit y la pobre calidad ósea, habitual en estos pacientes. materiales y métodos: Se presentan 6 pacientes tratados entre 2016 y 2021. Cinco casos de disrupción pélvica por revisiones fallidas, clasificadas como tipo IIIB de Paprosky y una fractura transversal de acetábulo, posible opción de tratamiento en casos de pacientes osteoporóticos. Resultados: Los pacientes tratados con esta técnica multidisciplinaria fueron controlados durante un promedio de 20 meses, ninguno presentó complicaciones posoperatorias. Los resultados valorados con escalas analógicas son prometedores e invitan a establecer este procedimiento como el patrón de referencia. Conclusiones: La evaluación estricta es necesaria en los defectos acetabulares. La inclusión de ingeniería informática médica permite estudiar la necesidad de usar injerto de banco, fabricar implantes a medida de titanio/tantalio trabecular multiporos, lo que es ideal para lograr la osteointegración, sumado a la posibilidad de planificar la dirección y la longitud de los tornillos al hueso remanente, según su calidad. La cementación de un cotilo de doble movilidad dentro del implante a medida disminuye el riesgo de luxación y de sobrecarga de este último, al eliminar la fricción metal-metal. Nivel de Evidencia: IIIB

Introduction: Given the increase in hip arthroplasties in the last century, serious acetabular defects are increasingly frequent events. Their treatment represents a real challenge, due to the bone deficit and poor bone quality that these patients usually present. Materials and Methods: Six patients treated between 2016 and 2021 are presented. Five cases of pelvic discontinuity due to failed revisions, classified as Paprosky type IIIB, and one transverse fracture of the acetabulum, a possible treatment option in cases of osteoporotic patients. Results: The patients treated with this multidisciplinary technique were followed up for an average of 20 months, and none of them presented postoperative complications. The results evaluated by analogous scales are promising and invite us to establish this procedure as the gold standard. Conclusions: Strict evaluation is necessary for acetabular defects. The inclusion of medical IT makes it possible to study the need to use bank grafting and to manufacture custom-made multiporous trabecular titanium/tantalum implants, which is ideal for achieving osseointegration, added to the possibility of planning the direction and length of the screws to the remaining bone, according to its quality. The cementation of a dual mobility cup inside the customized implant reduces the risk of dislocation and overload of the latter, by eliminating metal-metal friction. Level of Evidence: IIIB

Reoperation , Prosthesis Failure , Arthroplasty, Replacement, Hip , Printing, Three-Dimensional , Acetabulum
Article in Chinese | WPRIM | ID: wpr-928274


The choice of friction interface has always been a controversial topic in hip arthroplasty. Although the metal-on-metal (MoM) interface has gradually faded out of our vision, its revision is a clinical difficulty. Adverse reactions to metal debris (ARMD) is the most common indication for MoM hip arthroplasty revision, and the clinical results of hip arthroplasty due to ARMD are not satisfactory. At present, the indications and suggestions for revision of ARMD are not uniform. In this article, the clinical diagnosis, indications of revision, risk factors of prognosis, intraoperative suggestions and reasons for revision of ARMD were summarized. This article briefly introduces the diagnosis and treatment strategies and precautions of hip arthroplasty due to ARMD, in order to provide reference for such patients in clinical practice.

Humans , Arthroplasty, Replacement, Hip/adverse effects , Hip Prosthesis/adverse effects , Metal-on-Metal Joint Prostheses/adverse effects , Prosthesis Design , Prosthesis Failure , Reoperation
Article in Chinese | WPRIM | ID: wpr-928260


OBJECTIVE@#To investigate the clinical effect of porous tantalum Jumbo cup on acetabular reconstruction in revision of total hip arthroplasty.@*METHODS@#From September 2014 to December 2017, 18 patients(18 hips) with acetabular defect were reconstructed by porous tantalum Jumbo cup technology, including 6 males and 12 females;the age ranged from 54 to 76 years old with an average of(63.8±15.3) years. There were 6 cases of paprosky typeⅡA, 8 cases of typeⅡB, 2 cases of typeⅡC and 2 cases of type Ⅲ a. Harris score and visual analogue scale (VAS) were performed before and after operation. Imaging examination was performed to evaluate the position of hip rotation center and prosthesis, and to judge whether acetabular loosening, displacement and complications existed.@*RESULTS@#All cases were followed up for 13 to 49 months, with an average of 20.6 months. Harris score increased from 54.6±4.7 to 86.5±3.2 one year after operation(P<0.01), and VAS score decreased from 6.8±0.7 to 0.8±0.6 one year after operation (P<0.01). The transverse coordinate of hip rotation center was (3.52±0.72) cm before operation and (3.47±0.54) cm after operation (P>0.05). The longitudinal coordinate of hip rotation center was improved from (3.02±0.84) cm before operation to (2.35±0.53) cm after operation (P<0.01). During the follow-up period, the Jumbo cup was well fixed without loosening and displacement, the acetabular cup had bone ingrowth in varying degrees, and no light transmission line and osteolysis around the acetabular cup were found. No complications such as infection and nerve injury occurred.@*CONCLUSION@#The method of reconstructing acetabular bone defect with porous tantalum Jumbo cup is simple and easy, the early stability of acetabulum is good, and the short-term follow-up effect is good.

Aged , Female , Humans , Male , Middle Aged , Acetabulum/surgery , Arthroplasty, Replacement, Hip , Follow-Up Studies , Hip Prosthesis , Porosity , Prosthesis Failure , Reoperation , Retrospective Studies , Tantalum , Treatment Outcome
Rev. cuba. ortop. traumatol ; 35(2): e460, 2021. ilus, tab
Article in Spanish | LILACS, CUMED | ID: biblio-1357325


Introducción: El recambio acetabular primario puede llegar a ser una intervención de gran complejidad en dependencia del defecto óseo existente. Las lesiones pueden ser segmentarias, cavitarias o combinadas. Este último patrón es el que se observa con mayor frecuencia en pérdidas óseas periprotésicas por aflojamiento aséptico. Objetivos: Mostrar la evolución de la cirugía de recambio en la artroplastia de cadera, y orientar al cirujano en la toma de decisiones de modo individualizado, para evitar las complicaciones. Método: Se realizó la investigación basada en el tema de estudio, mediante la revisión de libros de texto de la especialidad, artículos científicos publicados en diferentes bases de datos informáticas: Pubmed/MEDLINE, SciELO, BVS, Scopus, Ebsco, Google Scholar, Cochrane, así como otras consultas en bibliotecas médicas. Análisis de la información: Las prioridades en la planificación de la reconstrucción se establecen para proporcionar un implante estable, restaurar la masa ósea y optimizar la biomecánica de la cadera, aunque son los hallazgos intraoperatorios los que definitivamente indicarán el tipo de intervención a seguir. Las exigencias funcionales de los pacientes y las comorbilidades deben ser consideradas, así como el coste-efectividad de la reconstrucción planificada. Conclusiones: La artroplastia total de cadera ha demostrado mejorar significativamente la calidad de vida en pacientes, con una baja tasa de complicaciones. Para prevenir el aflojamiento aséptico es necesario ser cuidadosos en la técnica de colocación de los componentes protésicos y utilizar el tipo de material más adecuado a la edad, demanda funcional y reserva ósea de cada paciente(AU)

Introduction: Primary acetabular replacement can become a highly complex intervention depending on the existing bone defect. Lesions can be segmental, cavitary, or combined. This last pattern is the one most frequently observed in periprosthetic bone loss due to aseptic loosening. Objectives: To show the evolution of replacement surgery in hip arthroplasty, and to guide the surgeon in making individualized decisions, to avoid complications. Method: A research was carried out on the study topic, by reviewing specialty textbooks, scientific articles published in different databases such as Pubmed/ MEDLINE, SciELO, BVS, Scopus, Ebsco, Google Scholar, Cochrane, as well as other inquiries in medical libraries. Information analysis: Reconstruction planning priorities are established to provide a stable implant, restore bone mass, and optimize hip biomechanics, although it is the intraoperative findings that will definitely indicate the type of intervention to follow. The functional demands of the patients and the comorbidities must be considered, as well as the cost-effectiveness of the planned reconstruction. Conclusions: Total hip arthroplasty has been shown to significantly improve the quality of life in patients, with low rate of complications. To prevent aseptic loosening, it is necessary to be careful in the technique of placement of the prosthetic components and to use the type of material most appropriate to the age, functional demand and bone reserve of each patient(AU)

Humans , Quality of Life , Surgical Procedures, Operative/classification , Bone Transplantation , Arthroplasty, Replacement, Hip , Prosthesis Failure , Radiography/classification
Rev. bras. ortop ; 56(1): 42-46, Jan.-Feb. 2021. tab, graf
Article in English | LILACS | ID: biblio-1288655


Abstract Objective To evaluate the wear of polyethylene in a Brazilian ultracongruent knee prosthesis with a rotating platform (Rotaflex, Víncula, Rio Claro, SP, Brasil). Methods We used the test method with the loading and preparation parameters mentioned in the standards regulation ISO 14243-1:2009, and the measurement methods mentioned in the standards regulation ISO 14243-2:2009, for the evaluation of the wear behavior of a Brazilian prosthesis with a rotating platform. The equipment used for the wear test was the ISO 14243-1 gait simulator (EndoLab, Riedering, Germany). Results After 10 million cycles, the evaluation of the polyethylene wear showed a regular appearance of surface wear at a mean rate of 2.56 mg per million cycles. Conclusion The wear of the polyethylene of the evaluated prosthesis was minimal after the tests performed and with safety limits higher than those recommended by biomechanical engineering.

Resumo Objetivo Avaliar o desgaste do polietileno de uma prótese de joelho brasileira ultracongruente de base rotatória (Rotaflex, Víncula, Rio Claro, SP, Brasil). Métodos Utilizou-se o método de ensaio com os parâmetros de carregamento e preparação citados na norma ISO 14243-1:2009, e os métodos de medição citados na norma ISO 14243-2:2009, para a avaliação do comportamento de desgaste de uma prótese nacional com base rotatória. O equipamento utilizado para o teste de desgaste foi o simulador de marcha ISO 14243-1 (EndoLab, Riedering, Alemanha). Resultados Após 10 milhões de ciclos, a avaliação do desgaste do polietileno mostrou uma aparência regular do desgaste da superfície com taxa média de 2,56 mg por milhão de ciclos. Conclusão O desgaste do polietileno da prótese avaliada foi mínimo após os ensaios realizados e com os limites de segurança superiores aos preconizados pela engenharia biomecânica.

Prostheses and Implants , Prosthesis Failure , Arthroplasty, Replacement, Knee , Equipment and Supplies , Knee Prosthesis
Rev. bras. ortop ; 56(1): 104-108, Jan.-Feb. 2021. tab, graf
Article in English | LILACS | ID: biblio-1288657


Abstract Objective This study aims to evaluate and correlate the nutritional status with potential complications during the immediate postoperative period of elderly patients surgically treated for proximal femoral fractures. Methods A prospective, cross-sectional analytical study with a quantitative approach, targeting patients aged 60 years old or more who were admitted to a hospital in Amazonas, Brazil, for surgical treatment of proximal femoral fractures. Surgical complications during the immediate postoperative period and their relationship with the nutritional status of the patient were determined using the mini nutritional assessment (MNA); in addition, the lymphocyte numbers and serum albumin levels were determined and correlated with the length of hospital stay. Results The sample consisted of 19 elderly patients, of both genders, with a mean age of 70.8 years. Most of the subjects (68.4%) were female. Malnutrition was diagnosed in 15.8% of the subjects using the body mass index (BMI) as, an anthropometric variable, and the MNA identified 31.6% of the subjects with malnutrition. Regarding total lymphocyte count, 100% of the sample showed a positive association with malnutrition in varying degrees; using serum albumin level as a parameter, malnutrition was identified in 89.4% of the subjects. Malnourished patients had the highest average length of stay. Surgical complications as surgical site infections occurred in 10.5% of the patients at risk of malnutrition. Conclusion This study revealed a higher rate of postoperative complications in elderly patients diagnosed with malnutrition.

Resumo Objetivo Avaliar e correlacionar o estado nutricional com possíveis complicações no pós-operatório imediato de pacientes submetidos a tratamento cirúrgico de fraturas de fêmur proximal. Métodos Estudo transversal prospectivo analítico e de abordagem quantitativa, tendo como população-alvo pacientes com idade igual ou superior a 60 anos, internados em uma instituição hospitalar no Amazonas, submetidos a tratamento cirúrgico de fraturas de fêmur proximal. Foram avaliadas as complicações cirúrgicas no pós-operatório imediato e sua relação com o estado nutricional através da mini avaliação nutricional (MAN), assim como a mensuração da contagem de linfócitos e albumina e a sua correlação com o tempo de internação. Resultados A amostra foi composta por 19 pacientes idosos, de ambos os sexos, com média de idade de 70,8 anos. A maioria dos pacientes (68,4%) eram do sexo feminino. Por meio da variável antropométrica índice de massa corporal (IMC), identificou-se a presença de desnutrição em 15,8% dos pacientes e, por meio da MAN, de 31,6%. Na avaliação do cálculo da contagem total de linfócitos, 100% da amostra apresentou associação positiva com desnutrição em graus variáveis e, fazendo-se uso da albumina sérica como parâmetro, a desnutrição foi identificada em 89,4%. Os pacientes desnutridos apresentaram a maior média de tempo de internação. As complicações cirúrgicas, por infecções do sítio cirúrgico, ocorreram em 10,5% nos pacientes em risco nutricional. Conclusão Neste estudo, observou-se maior índice de complicações no pós-operatório em idosos diagnosticados com desnutrição.

Postoperative Complications , Prosthesis Design , Surgical Wound Infection , Prosthesis Failure , Arthroplasty, Replacement, Knee , Fractures, Bone , Knee Prosthesis
Article in Spanish | LILACS, BINACIS | ID: biblio-1353910


Introducción: Debido al crecimiento exponencial del número de artroplastias de cadera, se espera una mayor cantidad de re-visiones en las próximas décadas. Los vástagos cónicos estriados modulares se han vuelto populares en la última década por sus resultados favorables. El objetivo de este estudio es evaluar los resultados, las complicaciones y la tasa de supervivencia de estos vástagos en las revisiones de cadera, con un seguimiento a mediano plazo. materiales y métodos: Estudio multicéntrico, retrospectivo. Se incluyeron 182 pacientes a quienes se les realizó una cirugía de revisión de cadera entre 2007 y 2017. Se colo-caron 185 vástagos cónicos estriados de fijación distal. El déficit de stock óseo femoral se clasificó según Paprosky y Burnett; y las facturas periprotésicas, según la clasificación de Vancouver. Se evaluó a los pacientes clínicamente con el Harris Hip Score (HHS) y con radiografías a los 3 meses y anualmente para evaluar la estabilidad del vástago, la subsidencia y el aflojamiento, así como la consolidación de la osteotomía. Resultados: Seguimiento medio 55.18 meses. El HHS posoperatorio tuvo una media de 80,28 (DE = 12,8, IC95% 78,5-82,97). No hubo complicaciones posoperatorias en el 75,4% de los pacientes. Las complicaciones más frecuentes fueron inestabilidad (7,6%) y subsidencia del implante (11,5%). Al final del seguimiento, el 95,05% de los pacientes tenía un implante estable. Conclusiones: Los vástagos cónicos estriados modulares de fijación distal proporcionan una solución confiable, reproducible y duradera para el manejo de revisiones de componentes femorales a medio plazo. Nivel de Evidencia: IV

Background: The number of arthroplasties performed every year is increasing; therefore, a greater number of revisions is expected in the coming decades. Modular fluted tapered stems have become the gold standard for their results in different series of patients. The objective of this article is to evaluate the results, complications and the survival rate of these stems in hip revisions with a medium-term follow-up. Materials and Methods: Retrospective, multicenter analysis. One hundred eighty-two patients who had undergone hip revision surgery between 2007 and 2017 were included. One hundred eighty-five modular fluted tapered stems were placed. Femoral bone stock defects were classified according to Paprosky and Burnett; and periprosthetic femur fractures according to Vancouver classification. Patients were evaluated clinically with Harris Hip Score (HHS) and radiographically 3 months after surgery and every year to assess stem stability, subsidence and loosening, as well as osteotomy healing. Results: Average follow-up was 55.18 months. Postoperative HHS had an average of 80.28 (SD = 12.8, 95% CI = [78.5, 82.97]). There were no postoperative complications in 75.4% of the patients. The most frequent complications were instability in 7.6% and implant subsidence in 11.5%. At the end of the follow-up, 95.05% of the patients had a stable implant. Conclusion: Modular fluted tapered stems provide a reliable, reproducible solution for the management of femoral component revisions at medium-term. Level of Evidence: IV

Middle Aged , Aged , Postoperative Complications , Reoperation , Prosthesis Failure , Treatment Outcome , Arthroplasty, Replacement, Hip , Hip Joint/surgery
Rev. Asoc. Argent. Ortop. Traumatol ; 86(4) (Nro Esp - ACARO Asociación Argentina para el Estudio de la Cadera y Rodilla): 501-511, 2021.
Article in Spanish | LILACS, BINACIS | ID: biblio-1353951


Introducción: El objetivo del estudio fue analizar la supervivencia sin recurrencia de infección en pacientes con reemplazo total de cadera tratados con revisión en dos tiempos, valorando el impacto del cultivo intraoperatorio y la congelación positiva en el reimplante. materiales y métodos: Estudio retrospectivo de 96 casos con infección periprotésica crónica, según los criterios de la MusculoSkeletal Infection Society, sometidos a los dos tiempos quirúrgicos en nuestra institución, entre 2008 y 2013. El seguimiento promedio fue 90 meses. La falla séptica se definió sobre la base de un consenso tipo Delphi modificado. La supervivencia sin falla séptica se definió sobre la base del estimador de Kaplan-Meier. Se compararon los resultados de supervivencia en función del cultivo intraoperatorio y de los estudios de anatomía patológica por congelación mediante la prueba del orden logarítmico. Resultados: La supervivencia sin falla séptica fue del 82,65% a los 2 años (IC95% 73,25-88,99%), 80,40% a los 5 años (IC95% 70,70-87,17%) y 77,32% a 6-10 años (IC95% 66,90-84,33%). Hubo significativamente más fallas en los pacientes con un cultivo positivo en el reimplante que en aquellos con un cultivo negativo (prueba del orden logarítmico, p = 0,0208), y en quienes tuvieron un estudio anatomopatológico por congelación positivo en el reimplante que en aquellos con un resultado negativo (prueba del or-den logarítmico, p = 0,0154). Conclusiones: Los reimplantes sin recurrencias infecciosas por, al menos, 6 años tuvieron un riesgo de falla séptica muy bajo. Cuando se detectó un cultivo o una congelación positivos, la falla séptica fue significativamente mayor. Nivel de Evidencia: IV

Background: We analyzed the survivorship free-from-septic failure in a series of THA cases treated with a two-stage protocol at long-term follow-up, with a special focus on the relevance of positive frozen section and positive intraoperative culture taken during the reimplantation. Materials and methods: We retrospectively reviewed data from 96 cases who met the Musculoskeletal Infec-tion Society criteria for periprosthetic joint infection and who had undergone both stages of a two-stage protocol at our institution between 2008-2013. Mean follow-up was 90 months. Treatment failure was determined with a modified Delphi-based consensus definition. Kaplan-Meier estimate was used to determine survivorship free-from-septic failure. Log-Rank test was used to compare variables associated with septic failure. Results: Survival free-from-septic failure was 82.65% at 2 years (95%CI 73.25%-88.99%), 80.40% at 5 years (95%CI 70.70%-87.17%) and 77.32% at 6-10 years (95%CI 66.90%-84.33%). Patients with a positive culture at reimplantation had significantly more septic failures than those without it (Log-Rank test, p=0.0208), while patients with a positive frozen section at reimplantation had significantly more septic failures than those without it (Log-Rank test, p=0.0154). Conclusions: Reimplantations that remained at least 6 years without septic recurrences had a very low risk of further septic failure. Both positive frozen section and intraoperative culture at reimplantation were risk factors for septic failure. Level of Evidence: IV

Middle Aged , Reoperation , Prosthesis Failure , Retrospective Studies , Treatment Outcome , Prosthesis-Related Infections , Arthroplasty, Replacement, Hip
Rev. urug. cardiol ; 36(3): e704, 2021. ilus
Article in Spanish | LILACS, UY-BNMED, BNUY | ID: biblio-1367089


La disfunción valvular protésica es cada vez más frecuente debido al envejecimiento de la población portadora de bioprótesis y se presenta como un desafío en el momento de su diagnóstico, valoración y tratamiento. Aplicar un enfoque imagenológico multimodal es fundamental para su manejo. Respecto al tratamiento, surge como nueva alternativa un procedimiento mínimamente invasivo de sustitución valvular percutánea, denominado valve in valve, principalmente en pacientes con riesgo quirúrgico elevado. Presentamos uno de los primeros casos locales de implante percutáneo de prótesis mitral transeptal dentro de una bioprótesis mitral quirúrgica disfuncionante.

Prosthetic valve dysfunction is increasingly common due to the aging of the bioprosthesis-bearing population, and it presents a challenge at the time of diagnosis, evaluation, and treatment. A multimodal imaging approach is essential for its management. In relation to treatment, a minimally invasive percutaneous valve replacement procedure called valve in valve arises as a new alternative, mainly in patients with high surgical risk. We present one of first local cases of percutaneous implantation of a transseptal mitral prosthesis within a dysfunctional surgical mitral bioprosthesis.

A disfunção valvular protética é cada vez mais comum devido ao envelhecimento da população portadora de biopróteses e representa um desafio no momento do diagnóstico, avaliação e tratamento. A multimodalidade da imagem cardiovascular é essencial para sua avaliação. Em relação ao tratamento, um procedimento de troca valvular percutânea minimamente invasivo, denominado valve in valve, surge como uma nova alternativa, principalmente em pacientes com alto risco cirúrgico. Apresentamos um dos primeiros casos realizados no Uruguai de implantação percutânea de prótese mitral transeptal dentro de bioprótese mitral cirúrgica disfuncional.

Humans , Female , Aged , Bioprosthesis/adverse effects , Prosthesis Failure , Heart Valve Prosthesis Implantation/methods , Mitral Valve/transplantation , Mitral Valve Stenosis/surgery , Tomography , Echocardiography, Doppler , Echocardiography, Transesophageal , Multimodal Imaging , Percutaneous Coronary Intervention , Mitral Valve Stenosis/diagnostic imaging
Rev. urug. cardiol ; 36(3): e203, 2021. ilus, tab
Article in Spanish | LILACS, UY-BNMED, BNUY | ID: biblio-1366959


Introducción: la degeneración valvular protésica es un problema clínico; los métodos de imagen convencionales permiten diagnosticarla en las últimas etapas. La tomografía por emisión de positrones (PET) con 18Ffluoruro puede detectar de manera precoz la degeneración subclínica. Objetivo: correlacionar parámetros de deterioro estructural protésico por PET con parámetros hemodinámicos ecocardiográficos al año de la sustitución valvular aórtica (SVA) por bioprótesis porcina. Métodos: estudio prospectivo ad hoc de un ensayo clínico. Se reclutaron pacientes sometidos a SVA por bioprótesis porcina en dos centros nacionales entre el 01/01/2019 y el 13/02/2020. Se realizaron controles clínicos y ecocardiográficos. Se seleccionaron aleatoriamente 19 sujetos a los que se les realizó PET 18Ffluoruro de sodio con angiotomografía al año de la SVA. Se midió la captación del trazador en la válvula (SUVavV) y aurícula derecha (SUVavA), calculando el índice SUVavV/SUVavA, que se comparó con los gradientes ecocardiográficos medio y máximo al año, mediante análisis de correlación de Spearman. Resultados: de 140 sujetos sometidos a SVA se realizó PET a 19, a los 16,3 meses (15,9-16,9) luego de la SVA. La mediana del índice SUVavV/SUVavA fue de 1,17 (1,11-1,27). Se encontró una correlación negativa moderada entre la captación de 18Ffluoruro y el gradiente medio (coeficiente de correlación -0,516, p = 0,028) y máximo (coeficiente -0,589, p = 0,010) al año. Conclusiones: en el seguimiento de los pacientes en los que se le realizó una sustitución valvular aórtica con bioprótesis, encontramos valores bajos de captación en el PET y gradientes ecocardiográficos normales con una correlación negativa moderada entre estos hallazgos

Introduction: prosthetic valve degeneration is a relevant clinical disorder; conventional imaging methods allow diagnosis in the later stages. 18Ffluoride positron emission tomography (PET) can detect subclinical degeneration earlier. Objective: correlate parameters of prosthetic structural deterioration by PET with echocardiographic hemodynamic parameters one year after aortic valve replacement (AVR) by porcine bioprosthesis. Methods: prospective ad hoc study of a clinical trial. Patients undergoing AVR by porcine bioprosthesis were recruited in two national centers between 01/01/2019 and 02/13/2020. Clinical and echocardiographic controls were carried out. 19 subjects were randomly selected and underwent 18Fsodium fluoride PET with CT angiography one year after AVR. Tracer uptake in the valve (SUVavV) and right atrium (SUVavA) was measured, creating the SUVavV/SUVavA index, which was compared with the mean and maximum gradients at one year, using Spearman's correlation analysis. Results: of a total of 140 subjects, PET was performed on 19 at 16.3 months (15.9-16.9) after the AVR. The median SUVavV/SUVavA ratio was 1.17 (1.11-1.27). A moderate negative correlation was found between. 18Ffluoride uptake and the mean gradient (correlation coefficient -0.516, p = 0.028) and maximum (coefficient of -0.589, p = 0.010) at one year. Conclusions: we found low uptake values in PET, echocardiographic gradients in normal range and no positive correlation between both parameters. It is the first national report with these imaging techniques

Introdução: a degeneração da válvula protética é um problema clínico; os métodos convencionais de imagem permitem o diagnóstico nas fases posteriores. A tomografia por emissão de pósitrons (PET) com fluoreto18F pode detectar a degeneração subclínica precocemente. Objetivo: correlacionar parâmetros de deterioração estrutural protética por PET com parâmetros hemodinâmicos ecocardiográficos após um ano da troca valvar aórtica (SVA) por bioprótese suína. Métodos: estudo ad hoc prospectivo de um ensaio clínico. Pacientes submetidos a SVA por bioprótese suína foram recrutados em dois centros nacionais entre 01/01/2019 e 13/02/2020. Foram realizados controles clínicos e ecocardiográficos. 19 indivíduos foram selecionados aleatoriamente que foram submetidos a PET com fluoreto de sódio 18F com angiotomografia um ano após AVS. A captação do traçador na válvula (SUVavV) e átrio direito (SUVavA) foi medida, criando o índice SUVavV/SUVavA, que foi comparado com os gradientes médio e máximo em um ano, usando a análise de correlação de Spearman. Resultados: de um total de 140 indivíduos submetidos a SVA, PET foi realizado em 19, em 16,3 meses (15,9-16,9) após a SVA. A proporção média de SUVavV/SUVavA foi de 1,17 (1,11-1,27). Uma correlação negativa moderada foi encontrada entre a captação de fluoreto18F e o gradiente médio (coeficiente de correlação -0,516, p = 0,028) e máximo (coeficiente de -0,589, p = 0,010) em um ano. Conclusões: encontramos valores baixos de captação na PET, gradientes ecocardiográficos dentro da normalidade, sem correlação positiva entre os dois parâmetros. É o primeiro trabalho nacional com essas técnicas de imagem

Humans , Male , Female , Aged , Aortic Valve , Sodium Fluoride/administration & dosage , Bioprosthesis , Prosthesis Failure , Calcinosis/diagnostic imaging , Heart Valve Prosthesis , Echocardiography , Prospective Studies , Follow-Up Studies , Positron-Emission Tomography
Article in Chinese | WPRIM | ID: wpr-879395


Femorotibial mechanical axis (FTMA) is one of important factors influencing clinical effect after total knee arthroplasty (TKA). It is generally believed that the range of lower limb alignment after TKA is controlled within neutral FTMA ± 3 °, which has more advantages in improving joint function, prolonging prosthesis survival rate and reducing revision rate, and obtain better clinical results. Therefore, neutral FTMA is also considered to be the gold standard for TKA. However, with the application of computer-assisted surgery and other technologies, the alignment of FTMA is more accurate than before, but the clinical effect after surgery has not significantly improved. Some scholars have begun to question the necessity of neutral alignment of FTMA, and proposed alignment methods such as kinematics and retained residual deformity, which could achieve better clinical effects. In recent years, it has been reported that FTMA might not be the most important factor influencing postoperative clinical effects, and it is suggested that the arrangement and measurement of lower limbs and the effects on adjacent joint functions could affect clinical effect after TKA. The paper reviews neutral FTMA alignment is still an important factor for success of TKA. After a thorough evaluation according to the patient's condition, it should be appropriately applied in the case of neutral FTMA alignment; the operator should explore other factors which affect clinical outcome after TKA, and improve it to achieve the best therapeutic effect.

Humans , Arthroplasty, Replacement, Knee , Biomechanical Phenomena , Knee Joint/surgery , Knee Prosthesis , Lower Extremity , Osteoarthritis, Knee/surgery , Prosthesis Failure , Surgery, Computer-Assisted
Arch. cardiol. Méx ; 90(2): 108-115, Apr.-Jun. 2020. tab, graf
Article in English | LILACS | ID: biblio-1131018


Abstract Background: Paravalvular leak (PVL) is a frequent and important complication after surgical valvular replacement that can cause heart failure and hemolytic anemia and is associated with poor clinical outcomes. Surgical reoperation has been the standard treatment, but it is associated with high morbidity and mortality. Transcatheter closure is a therapeutic alternative. The aim of the present study is to analyze the feasibility and the short- and medium-term outcomes of the transcatheter closure of PVLs. Methods: Single-center registry of consecutive patients with post-surgical PVLs that underwent transcatheter closure, between January 2006 and December 2016. Efficacy and safety results were analyzed during the procedure and at 6-month follow-up. Results: Twenty-one PVLs (15 mitral, 5 aortic, and 1 tricuspid) were closure during 20 procedures. In the initial echocardiography, 91% of the leaks were severe. The most used device was the Amplatzer Vascular Plug III® in 10 procedures (50%). The three-dimensional transesophageal echocardiography was used in 70% of cases. The device was successfully implanted in 95% of cases, a regurgitation reduction ≥ 1 grade was achieved in 95% of the cases, and the clinical success was 79%. Six-month survival was 100%; however, three cases required valvular surgery (15%). Conclusions: Transcatheter closure of PVLs is a feasible and safe procedure with high rates of technical, echocardiographic, and clinical success in the short and medium term. It is an adequate therapeutic alternative, mainly in high surgical risk patients and multiples comorbidities.

Resumen Introducción: La fuga paravalvular es una complicación frecuente e importante posterior al reemplazo valvular quirúrgico que puede ocasionar insuficiencia cardiaca, anemia hemolítica y se relaciona con malos resultados clínicos. La reintervención quirúrgica ha sido el tratamiento habitual, pero se acompaña de alta morbimortalidad. El cierre transcatéter es una alternativa terapéutica. El objetivo del presente estudio es analizar la factibilidad y los resultados a corto y mediano plazo del cierre transcatéter de fugas paravalvulares con dispositivos oclusores. Métodos: Registro unicéntrico de una serie consecutiva de pacientes con fugas paravalvulares posquirúrgicas que fueron cerradas vía transcatéter con dispositivos oclusores, entre enero del 2006 y diciembre del 2016. Se analizaron los resultados de eficacia y seguridad durante el procedimiento y a seis meses. Resultados: Se trataron 21 fugas paravalvulares (15 mitrales, 5 aórticas y 1 tricuspídea) durante 20 procedimientos. El 91% de las fugas fue grave en la ecocardiografía inicial. El dispositivo utilizado con más frecuencia fue el Amplatzer Vascular Plug III® en 10 procedimientos (50%). Se utilizó ecocardiografía transesofágica tridimensional en 70% de los casos. Se logró implantar el dispositivo con éxito en el 95% de los casos; se consiguió una reducción ≥ 1 del grado de regurgitación en el 95% de las veces y se alcanzó el éxito clínico en el 79%. A seis meses la supervivencia fue del 100%; sin embargo, tres casos requirieron cirugía valvular (15%). Conclusiones: El cierre transcatéter de fugas paravalvulares es un procedimiento factible, seguro y con tasas elevadas de éxito técnico, ecocardiográfico y clínico a corto y mediano plazo. Es una alternativa terapéutica adecuada, en particular en pacientes considerados de alto riesgo quirúrgico y múltiples comorbilidades.

Humans , Male , Female , Adult , Middle Aged , Aortic Valve Insufficiency/surgery , Tricuspid Valve Insufficiency/surgery , Cardiac Catheterization/methods , Mitral Valve Insufficiency/surgery , Time Factors , Prosthesis Failure , Heart Valve Prosthesis , Registries , Follow-Up Studies , Treatment Outcome , Echocardiography, Transesophageal , Echocardiography, Three-Dimensional , Septal Occluder Device
Acta ortop. mex ; 34(1): 22-26, ene.-feb. 2020. tab
Article in Spanish | LILACS | ID: biblio-1345080


Resumen: Introducción: En un reemplazo total de cadera primario (RTC), diferentes materiales son los que se usan para las superficies de apoyo. En nuestro medio, las cabezas de metal o cerámica con polietileno altamente entrecruzado (PA) son los más utilizados. Estas combinaciones tienen buenos resultados, pero no es claro cuál es superior clínicamente. Basados en una revisión sistemática de la literatura y de los registros nacionales de artroplastía, el objetivo de este estudio es determinar si existe alguna diferencia significativa desde el punto de vista clínico. Material y métodos: Realizamos una revisión sistemática de la literatura y de los registros nacionales de artroplastía. Buscamos estudios en los que se compararan los tipos de superficie de contacto: cerámica-polietileno altamente entrecruzado (CP) y metal-polietileno altamente entrecruzado (MP), además de los registros nacionales de artroplastía que describieran, con un seguimiento mínimo de 10 años, la tasa de revisión según el tipo de superficie. El desenlace evaluado fue: tasa de revisión por cualquier causa según el tipo de superficie. Resultados: Dos de quince registros nacionales fueron incluidos: el registro australiano muestra una diferencia en la tasa de revisión a 15 años, comparando CP: 6.3 (IC 5.8, 6.7) contra MP: 5.1 (IC 4.6, 5.7). El registro de Nueva Zelanda no muestra diferencias en la tasa de revisión/100 componentes/año: CP de 0.54 (0.48-0.61) en comparación con MP de 0.61 (0.57-0.66). No encontramos estudios clínicos con los criterios de inclusión que respondan la pregunta de investigación. Conclusión: Los resultados de esta revisión muestran una alta supervivencia cuando se usa polietileno altamente entrecruzado; asimismo, los resultados son similares cuando se utilizan cabezas de cerámica o metálicas.

Abstract: Introduction: In primary hip replacement, different materials are used for bearing surfaces. In our medium metal or ceramic heads with highly crossed-linked polyethylene (PA) are the most used. These combinations have good results, but it is not clear which is clinically superior. The objective of this study is to determine whether there is any clinically significant difference based on a systematic review of the literature and national registries of arthroplasty. Material and methods: We conduct a systematic review of the literature and national registries of arthroplasty and we were looking for studies comparing bearing surfaces: ceramic-highly cross-linked polyethylene (CP) and metal-highly cross-linked polyethylene (MP); describing the revision rate according to the surface type with a minimum 10-year follow-up. The outcome evaluated was: review rate for any cause depending on surface type. Results: Two out of fifteen national registries were included. The Australian registry shows a difference in the 15-year revision rate: CP: 6.3 (IC 5.8, 6.7) vs MP: 5.1 (IC 4.6, 5.7). The New Zealand registry shows no differences in revision rate/100 components/year: CP 0.54 (0.48-0.61) vs MP 0.61 (0.57-0.66). We do not find clinical studies with inclusion criteria that answer the research question. Conclusion: The results of this review show a high survival rate with the use of highly cross-linked polyethylene, the results are similar when using ceramic or metal heads.

Humans , Arthroplasty, Replacement, Hip , Hip Prosthesis , Prosthesis Design , Reoperation , Australia , Prosthesis Failure , Ceramics , Polyethylene
Rev. Col. Bras. Cir ; 47: e20202481, 2020. tab, graf
Article in English | LILACS | ID: biblio-1136536


ABSTRACT Endovascular treatment for femoropopliteal arterial disease has made revascularization procedures less invasive, but the self-expanding stents used can suffer great wear in arteries with extreme mobility. Objective: to evaluate the prevalence of fractures in stents implanted in the femoropopliteal segment, to identify predisposing factors and consequences on arterial patency. Method: between March and June 2019, thirty patients previously operated for femoropopliteal obstruction underwent stent X-rays in anteroposterior and lateral views to detect fractures and Doppler to analyze arterial patency. Results: we observed 12 cases with fractures (33.3%): 1 type I (2.8%), 3 type II (8.3%), 5 type III (13.9%), 3 type IV (8.3%) and no type V. According to the TASC II we had 1 in group B (8.3%), 6 in group C (50%) and 5 in group D (41.6%) p <0.004. The number of stents per limb was 3.1 (± 1.3) in cases of fracture versus 2.3 (± 1.3) in cases without fracture (p = 0.08). The extension was 274.17mm (± 100.94) in cases of fracture and 230.83mm (± 135.44) in cases without fracture (p = 0.29). On Doppler we had: 17 patients (47.2%) without stenosis, 9 patients (25%) with stenosis> 50% and 10 patients (27.8%) with occlusion (p = 0.37). There was no correlation between fracture and arterial obstruction (p = 0.33). Conclusion: stent fractures are a frequent finding in the femoropopliteal area (33.3%), being more prevalent in cases of more advanced disease (C and D). There was no association between the finding of fracture and arterial obstruction.

RESUMO Os tratamentos endovasculares para a doença arterial obstrutiva fêmoro-poplítea tornaram os procedimentos de revascularização menos invasivos, porém os stents metálicos autoexpansíveis utilizados podem sofrer grande desgaste em artérias com extrema mobilidade. Objetivo: avaliar a prevalência de fraturas em stents implantados no segmento fêmoro-poplíteo, identificar fatores predisponentes e possíveis consequências sobre a patência arterial. Métodos: entre março a junho de 2019, trinta pacientes previamente operados por obstrução fêmoro-poplítea realizaram RX dos stents em incidências ântero-posterior e perfil para detectar fraturas e eco Doppler para analisar a patência arterial. Resultados: observamos 12 casos com fraturas (33,3%): 1 do tipo I (2,8%), 3 do tipo II (8,3%), 5 do tipo III (13,9%), 3 do tipo IV (8,3%) e nenhuma tipo V. Segundo a classificação TASC II, tivemos 1 no grupo B (8,3%), 6 no grupo C (50%) e 5 no grupo D (41,6%) p<0,004. O número de stents por membro foi de 3,1 (±1,3) nos casos de fratura contra 2,3 (±1,3) nos casos sem fratura (p = 0,08). A extensão tratada foi 274,17mm (±100,94) nos casos de fratura e 230,83mm (±135,44) nos casos sem fratura (p=0,29). No Doppler tivemos: 17 pacientes (47,2%) sem estenose, 9 pacientes (25%) com estenose>50% e 10 pacientes (27,8%) com oclusão (p=0,37). Não houve correlação entre fratura e obstrução arterial (p=0,33). Conclusão: as fraturas de stents são um achado frequente no setor fêmoro-poplíteo (33,3%) sendo mais prevalentes nos casos de doença mais avançada TASC II C e D. Não houve associação entre o achado de fratura e obstrução arterial.

Humans , Popliteal Artery , Prosthesis Failure , Stents , Peripheral Vascular Diseases/therapy , Ultrasonography, Doppler, Color/methods , Peripheral Arterial Disease , Endovascular Procedures/methods , Prosthesis Design , Vascular Patency , Prevalence , Retrospective Studies , Risk Factors , Treatment Outcome , Peripheral Vascular Diseases/diagnostic imaging , Leg/blood supply
Artrosc. (B. Aires) ; 27(4): 146-154, 2020.
Article in Spanish | LILACS, BINACIS | ID: biblio-1177890


El propósito de este trabajo fue realizar una evaluación retrospectiva, clínica y radiológica, de una serie de pacientes intervenidos quirúrgicamente de una artroplastia total de rodilla con prótesis abisagrada, analizando las causas de falla y complicaciones en el corto y mediano plazo.Se evaluaron un total de veinticuatro prótesis abisagradas de rodilla en reconstrucciones no oncológicas. Trece fueron mujeres y once, hombres, con un promedio de setenta y dos años (cincuenta y tres a ochenta y siete años). El seguimiento promedio fue de cuarenta meses (rango de veinte a setenta meses). En once pacientes la cirugía realizada fue una artroplastia primaria compleja y en trece casos, una cirugía de revisión protésica. Se realizó un examen radiográfico y una evaluación clínica y funcional en el preoperatorio y en el último control mediante la utilización del score de la Knee Society (KSS).Siete pacientes (29%) presentaron complicaciones mayores dentro del primer año de seguimiento; tres pacientes evidenciaron una luxación patelofemoral y dos pacientes presentaron una luxación femorotibial de la prótesis por ruptura del componente abisagrado. El puntaje promedio de la evaluación clínica mediante el score del KSS fue de 36 en preoperatorio (rango 22 a 54 puntos) y de 78 puntos promedio en el último control (rango 56 a 95 puntos), lo que implica una mejora de 42 puntos. La sobrevida del implante fue de 92% a los cuarenta meses. No se observaron diferencias funcionales significativas al comparar los pacientes con artroplastias primarias con aquellos pacientes con artroplastias de revisión.La utilización de implantes abisagrados en artroplastias complejas de rodilla primarias, o de revisión, presentó resultados funcionales y radiológicos aceptables, con una sobrevida del implante del 92% en el mediano plazo, sin embargo, se observa un elevado índice de complicaciones.Tipo de estudio: Serie de casosNivel de evidencia: IV

The purpose of this study was to retrospectively evaluate a series of patients who underwent surgery for a total knee arthroplasty with a hinged prosthesis and determinate clinical and radiological outcomes, analyzing the causes of failure and complications in the short and medium term.A total of twenty-four hinged knee prostheses were evaluated in non-oncological reconstructions. Thirteen were women and eleven men, with an average age of seventy-two years (fifty-three to eighty-seven years). The average follow-up was forty months (range from twenty to seventy months). In eleven cases the patients underwent a complex primary arthroplasty and in thirteen cases a prosthetic revision surgery. Radiographic control and clinical and functional evaluation are performed preoperatively and in the last control using the Knee Society Score (KSS).Seven patients (29%) have a major complication in the first year of follow-up, three patients with an extensor mechanism dislocation and two patients with a prosthetic dislocation because a rupture of the hinged component. The average clinical evaluation KSS score was 36 in the preoperative (range 22 to 54 points) and 78 average points in the last control (range 56 to 95 points), which an improvement of 42 points. Implant survival was 92% at forty months. There are no differences between patients with primary arthroplasties with those with revision arthroplasties.The use of hinged implants in complex primary, or revision knee arthroplasties, provides acceptable functional and radiological results with an implant survival of 92% in the medium term, however we observed a high rate of complications.Type of study: Case series Level of evidence: IV

Middle Aged , Aged , Aged, 80 and over , Postoperative Complications , Reoperation , Survival , Prosthesis Failure , Arthroplasty, Replacement, Knee