Does total knee arthroplasty affect pelvic movements? A prospective comparative study

SUMMARY OBJECTIVE: Pathology in any segment of the spine-pelvis-lower extremity may impair the global postural balance, leading to compensatory alterations in other parts. The aim of this study was to compare the pelvic movements of patients suffering from knee osteoarthritis with patients who underwent total knee arthroplasty and healthy controls. METHODS: This study was performed at the Department of Orthopedics and Traumatology Clinic of a Cankiri State Hospital between April 2021 and February 2022. This study included 84 participants. Of them, 31 patients who underwent total knee arthroplasty between 2018 and 2020 years were selected as the total knee arthroplasty group, while 28 patients with knee osteoarthritis were selected as the knee osteoarthritis group. In the control group, there were 25 healthy individuals. Exclusion criteria from the study included any kind of neurological disease, an inability to walk a distance of 100 m unassisted, or a history of surgery to the lower limb. Pelvic movements (i.e., tilt, rotation, and obliquity) and gait parameters (i.e., "gait velocity," "cadence," and "stride length") were assessed using a wireless tri-axial accelerometer. RESULTS: Total knee arthroplasty and control groups had decreased minimum anterior tilt of the pelvis, decreased maximum anterior tilt, and decreased oblique range of the pelvis compared with the knee osteoarthritis group. In comparison with the control group, gait velocity and length of stride during gait were remarkably lower in both knee osteoarthritis and total knee arthroplasty groups. CONCLUSION: In this study, total knee arthroplasty was found to affect pelvic movements. It was thought that total knee arthroplasty changed these variables, probably owing to the frontal and sagittal plane alignment correction through surgery.

Fijación interna combinada con artroplastia total de cadera en fracturas acetabulares inveteradas complejas en ancianos. Reporte de caso / Internal fixation combined with total hip arthroplasty in complex inveterate acetabular fractures in the elderly. Case report

La fijación interna combinada con artroplastia en pacientes de edad avanzada, está indicada en fracturas acetabulares complejas inveteradas, artrosis preexistente, luxación inveterada, Impactación supero-medial de la cúpula acetabular, la finalidad de la cirugía es lograr la fijación de la columna anterior, columna posterior, lamina cuadrilátera y pared posterior para proporcionar estabilidad adecuada al componente acetabular y restaurar el centro de rotación de la cadera. Debido a la complejidad de estas lesiones, se decide presentar el siguiente caso clínico, que corresponde una paciente femenina de 70 años, quien posterior a traumatismo de baja energía presenta fractura inveterada compleja con patrón en T de Acetábulo de 8 meses de evolución. El Objetivo es: Evaluar los resultados del tratamiento de las fracturas acetabulares complejas en pacientes de edad avanzada con reducción abierta más fijación interna combinada con artroplastia total de cadera. Se realiza en un 1er tiempo: Abordaje Ilioinguinal, ORIF con placa de reconstrucción 3,5 mm para CA, 2do Tiempo: Abordaje de Kocher Langenbeck, ORIF con placa de reconstrucción 3,5 mm para CP y PP. 3er Tiempo: ATC izquierda primaria no cementada, con aporte biológico de injerto óseo autologo. Resultado: Se restableció la integridad de las líneas acetabulares, reducción anatómica según Matta, índice de Harris hip score de 88 puntos. Se concluye que el procedimiento combinado de ORIF mas ATC es el tratamiento ideal de las fracturas acetabulares complejas inveteradas en pacientes de edad avanzada(AU)

Internal fixation combined with arthroplasty in elderly patients is indicated in inveterate complex acetabular fractures, preexisting osteoarthritis, inveterate dislocation, supero medial impaction of the acetabular dome, the purpose of surgery is to achieve fixation of the anterior column (AC), posterior column (PC), quadrilateral plate, and posterior wall (PP) to provide adequate stability to the acetabular component and restore the hip center of rotation. Due to the complexity of these injuries, it is decided to present the following clinical case, which corresponds to a 70-year-old female patient, who, after a low-energy trauma, presents a complex inveterate fracture with a T-pattern of the acetabulum of 8 months of evolution. The Objective is: To evaluate the results of the treatment of complex acetabular fractures in elderly patients with open reduction plus internal fixation (ORIF) combined with total hip arthroplasty (THA). It is performed in a 1st stage: Ilioinguinal approach, ORIF with 3.5 mm reconstruction plate for (CA), 2nd Stage: Kocher Langenbeck approach, ORIF with 3.5 mm reconstruction plate for (CP) and (PP). 3rd Time: Uncemented primary left THA, with biological contribution of autologous bone graft. Result: The integrity of the acetabular lines was restored, anatomical reduction according to Matta, Harris hip score index of 88 points. It is concluded that the combined procedure (ORIF plus ATC) is the ideal treatment of inveterate complex acetabular fractures in elderly patients(AU)

Artroplastia de quadril em Minas Gerais: análise dos dados do Sistema Único de Saúde / Hip arthroplasty in Minas Gerais: analysis of data from the Unified Health System

Artroplastia de quadril em Minas Gerais: análise dos dados do Sistema Único de Saúde. 2023. 109 f. Dissertação (Mestrado Profissional em Gestão de Serviços em Saúde) ­ Escola de Enfermagem, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, 2023. Introdução: o aumentando da longevidade está associado ao aumento de incidência e prevalência de doenças crônicas, como a artrose ou osteoartrite, além de ampliar a chance de ocorrência de fratura de colo do fêmur, mais frequente em indivíduos com idades avançadas, levando ao consequente aumento da necessidade de realização da cirurgia de artroplastia de quadril. Objetivo: analisar a incidência de artroplastias de quadril realizadas pelo Sistema Único de Saúde em Minas Gerais, no período de 2013 a 2022. Metodologia: este é um estudo ecológico em que as unidades de análise foram as Microrregiões de Saúde do estado de Minas Gerais. Foram descritas a frequência dos diferentes tipos de artroplastias de quadril, sua evolução temporal, a média de idade de realização relativa a cada um desses procedimentos (por tipo), além de estimadas as incidências anuais da cirurgia. Também foi realizada análise dos fatores associados à incidência da cirurgia nas diferentes Microrregiões. Como variável de desfecho foi considerada a taxa de incidência no ano de 2018. Os fatores investigados quanto à associação em relação à taxa da cirurgia por 100.000 habitantes foram: o Índice Mineiro de Responsabilidade Social (IMRS); proporção de habitantes do sexo feminino; porcentagem de habitantes maior que 50 anos; porcentagem de habitantes brancos; médicos especialistas da Sociedade Brasileira de Ortopedia e Traumatologia (SBOT)/1.000 habitantes; e número de leitos por Macrorregião de Saúde. Para analisar a correlação entre a incidência de artroplastia e as demais variáveis do estudo foi utilizado o coeficiente de correlação de Spearman. Foi empregado modelo de regressão Binomial Negativa, simples e múltiplo, considerando a ocorrência de artroplastia em 2018 como o desfecho, e os demais indicadores do estudo como variáveis explicativas, incluindo os subíndices do IMRS Saúde. Ao selecionar as variáveis para inclusão no modelo múltiplo, considerou-se um valor-p inferior a 0,10 como critério. Permaneceram no modelo final as variáveis significativas ao nível de 5% de significância. Resultados: no período de janeiro de 2013 a dezembro de 2022, foram identificadas em Minas Gerais 34.273 internações para artroplastia de quadril o que representou uma taxa de 15,5 internações para a cirurgia por 100 mil habitantes. Os tipos mais frequentes foram: artroplastia total primaria do quadril não cimentada/híbrida (36,8%), artroplastia parcial de quadril (34,8%) e artroplastia total primária do quadril cimentada (17,3%), respectivamente. Quanto à evolução temporal, a mediana dos valores de incidência da cirurgia se manteve quase constante entre os anos de 2013 e 2018, com aumento em 2019. Em 2020 a mediana alcançou o menor valor do período estudado, aumentando em 2021 e alcançando o maior valor do recorte histórico estudado em 2022. Os resultados do modelo múltiplo revelaram que os fatores que permaneceram associados ao aumento da incidência das artroplastia foram maiores IMRS Educação e maior proporção de pessoas com 50 anos ou mais. Conclusão: pode-se concluir que em regiões com melhor situação da educação da população possivelmente há mais acesso à artroplastia do quadril e que populações mais envelhecidas apresentam maior necessidade da cirurgia.

Introduction: increased longevity is associated with an increase in the incidence and prevalence of chronic diseases, such as arthrosis or osteoarthritis, in addition to increasing the chance of femoral neck fractures, which are more common in older individuals, leading to a consequent increase in the need for of hip arthroplasty surgery. Objective: to analyze the incidence of hip arthroplasties performed by the Unified Health System in Minas Gerais, from 2013 to 2022. Methodology: this is an ecological study in which the units of analysis were the Health Microregions of the state of Minas Gerais. The frequency of different types of hip arthroplasties, their temporal evolution, the average age of completion for each of these procedures (by type) were described, in addition to estimating the annual incidence of surgery. An analysis of factors associated with the incidence of surgery in different microregions was also carried out. The incidence rate in 2018 was considered as an evolution variable. The factors investigated regarding the association in relation to the surgery rate per 100,000 inhabitants were: the Minas Gerais Social Responsibility Index (IMRS); proportion of female inhabitants; percentage of inhabitants over 50 years old; percentage of white inhabitants; specialist doctors from the Brazilian Society of Orthopedics and Traumatology (SBOT)/1,000 inhabitants; and number of beds per Health Macroregion. To analyze the projection between the incidence of arthroplasty and the other study variables, the Spearman projection coefficient was used. A simple and multiple Negative Binomial regression model was used, considering the occurrence of arthroplasty in 2018 as the outcome, and the other study indicators as explanatory variables, including the IMRS Health sub-indices. When selecting the variables for inclusion in the multiple models, if a p-value less than 0.10 as selective. Significant variations at the 5% significance level remained in the final model. Results: from January 2013 to December 2022, 34,273 admissions for hip arthroplasty were identified in Minas Gerais, which represented a rate of 15.5 admissions for surgery per 100 thousand inhabitants. The most frequent types were: uncemented/hybrid primary total hip arthroplasty (36.8%), partial hip arthroplasty (34.8%) and cemented primary total hip arthroplasty (17.3%), respectively. Regarding temporal evolution, the median surgery incidence values remained almost constant between the years 2013 and 2018, with an increase in 2019. In 2020 the median reached the lowest value of the trained period, increasing in 2021 and reaching the highest value of the historical sample trained in 2022. The results of the multiple models revealed that the factors that occurred associated with the increase in the incidence of arthroplasty were higher IMRS Education and a higher proportion of people aged 50 or over. Conclusion: it can be concluded that in regions with a better population education situation there is possibly more access to hip arthroplasty and that older populations have a greater need for surgery.

Resultados funcionales tras hemiartroplastía de hombro por fractura de húmero proximal: experiencia en nuestro centro / Functional results after shoulder hemiarthroplasty for proximal humerus fracture: experience in our center

Resumen: Introducción: la hemiartroplastía de hombro está siendo relegada como tratamiento de fracturas de húmero proximal no osteosintetizables. Nuestro objetivo es analizar los resultados funcionales de los pacientes tratados con hemiartroplastía por este motivo en nuestro centro. Material y métodos: estudio descriptivo transversal que incluye a los pacientes intervenidos entre Febrero de 2016 y Noviembre de 2021; 24 pacientes, con un seguimiento medio de 44.6 meses. Fueron recogidos el balance articular activo, el test de Constant-Murley, el cuestionario DASH y el dolor actual (EVA). Como parámetros radiográficos se analizó el número de fragmentos de fractura y la consolidación de las tuberosidades. Resultados: se obtuvo una media de 71.65 ± 13.75 en el Constant-Murley y de 18.14% ± 13.92 en el DASH. Para flexión de hombro la media fue de 108.75o ± 41.26; 104.5o ± 43.68 para abducción y 33o ± 14.73 para rotación externa. En rotación interna 60% llegaba hasta plano interescapular. EVA medio de 1.25 ± 1.74. Tuberosidades consolidadas en 90.5%. No hubo diferencias significativas entre el Constant-Murley, DASH ni rotaciones de pacientes mayores y menores de 65 años. Los mayores de 65 años obtuvieron flexión media de 125.91o ± 26.82 y los menores de 87.78o ± 26.82 (p = 0.038). La abducción media en mayores de 65 fue de 125.45 ± 28.94 versus 78.89 ± 46.29 en el grupo joven (p = 0.012). Conclusión: la hemiartroplastía otorga calidad de vida con aceptable funcionalidad y buen control del dolor, por lo que debe continuar siendo una alternativa a tener en cuenta en pacientes seleccionados.

Abstract: Introduction: shoulder hemiarthroplasty is being relegated as a treatment for non-osteosynthetic proximal humerus fractures. Our objective is to analyze the functional results of patients treated with hemiarthroplasty for this reason in our hospital. Material and methods: cross-sectional descriptive study that includes patients operated between February 2016 and November 2021; 24 patients, with an average follow-up of 44.6 months. Active joint balance, the Constant-Murley test, the DASH questionnaire and current pain (VAS) were collected. The radiographic parameters analyzed were the number of fracture fragments and the consolidation of the tuberosities. Results: a mean of 71.65 ± 13.75 was obtained in the Constant-Murley and 18.14% ± 13.92 in the DASH. For shoulder flexion, the mean was 108.75o ± 41.26; 104.5o ± 43.68 for abduction and 33o ± 14.73 for external rotation. About internal rotation, 60% of the patients reached the scapular plane. Average VAS was 1.25 ± 1.74. Consolidated tuberosities in 90.5%. There were no significant differences comparing the Constant-Murley test, DASH or rotations between both, over and under 65 years old group of patients. Those over 65 years of age obtained a mean flexion of 125.91o ± 26.82 whereas those under 87.78o ± 26.82 (p = 0.038). The mean abduction in those over 65 was 125.45 ± 28.94 vs 78.89 ± 46.29 in the young group (p = 0.012). Conclusion: hemiarthroplasty provides quality of life with acceptable functionality and good pain control, therefore it should continue to be an alternative to consider in selected patients.

Evaluar los resultados funcionales, radiológicos y las complicaciones en el tratamiento quirúrgico de las fracturas acetabulares bilaterales / Functional, radiological results and complications evaluation in the surgical treatment of bilateral acetabular fractures

Las Fracturas Acetabulares bilaterales tienen una incidencia extremadamente baja. El objetivo es evaluar los resultados funcionales, radiológicos y las complicaciones en el tratamiento quirúrgico de las fracturas acetabulares bilaterales. Este estudio se basa en datos de 722 Fracturas de Acetábulo tratadas por el autor principal durante 15 años desde enero de 2005 a septiembre de 2020. Se realizó un estudio descriptivo y retrospectivo. Se incluyeron 13 casos correspondientes al 1,8% del universo. El 72,7% de las fracturas se presentaron por accidentes de tránsito, el 69,3% corresponden a fracturas de patrón asociado en relación con el 30,7% de fracturas de patrón simple. En el 56,5% se realizó abordaje de Kocher Langenbeck. La reducción anatómica se logró en el 92,30%, en el 7,69% la reducción no fue satisfactoria. Para la evaluación funcional se utilizó el HHS, 88,46% reportaron buenos resultados y 11,53% insatisfactorios. Respecto a las complicaciones, 7,69% presentaron osteoartrosis Tönnis II y 7,69% neuroapraxia del nervio ciático izquierdo. Se encontró supervivencia del 100%. El tiempo ideal para la resolución quirúrgica es antes de las 3 semanas. Los resultados radiológicos y funcionales están directamente relacionados al tiempo de fijación, es importante tomar en cuenta que debido a la magnitud de la energía del impacto que se transmite por ambos acetábulos los patrones de fractura que coexisten entre ambas superficies articulares son diferentes, por lo que optimizar la planificación preoperatoria es fundamental(AU)

Bilateral Acetabular Fractures have an extremely low incidence. The objective is to evaluate the functional and radiological results and the complications in the surgical treatment of bilateral Acetabular Fractures. This study is based on a data of 722 acetabulum fractures cases treated by the lead author for over 15 years from january 2005 to september 2020. A descriptive, retrospective study was made. 13 cases corresponding to 1,8% of the universe were included. 72,7% of the fractures occurred due to traffic accidents, 69,3% correspond to associated pattern fractures in relation to 30,7% of simple pattern fractures. In 56,5% the Kocher Langenbeck approach was performed. The anatomical reduction was achieved in 92,30%, in 7,69% the reduction was not satisfactory. The functional result was evaluated according to the HHS, obtaining good results in 88,46% of the cases and unsatisfactory results in 11,53%. Regarding complications, we found 7,69% with Tönnis II osteoarthrosis, 7,69% with neuropraxia of the left sciatic nerve. Successful results with 100% survival were found. The ideal time for surgical resolution is before 3 weeks. The radiological and functional results are directly related to the fixation time. It is important to take into account that due to the magnitude of the impact energy that is transmitted by both acetabulums, the fracture patterns that coexist between both articular surfaces are different, so optimizing preoperative planning is essential(AU)

Ações judiciais por artroplastia de quadril no Estado do Rio de Janeiro, Brasil, 2016-2018 / Legal claims to obtain hip replacement surgery in the State of Rio de Janeiro, Brazil, 2016-2018 / Acciones judiciales por artroplastia de cadera en el Estado de Río de Janeiro, Brasil, 2016-2018

Analisar as características processuais, médico-sanitárias e dos demandantes das ações por artroplastia de quadril, ajuizadas contra os entes públicos no Estado do Rio de Janeiro, Brasil, de 2016 a 2018. Realizou-se um estudo retrospectivo, cujo objeto foi ações por artroplastia de quadril, ajuizadas contra os entes públicos no Estado do Rio de Janeiro, localizadas na base de dados do Sistema Estadual de Regulação e do Núcleo de Apoio Técnico do Judiciário do Tribunal de Justiça do Rio de Janeiro (NAT-JUS), protocoladas entre janeiro de 2016 e dezembro de 2018. A análise dos dados se deu por segmento de justiça. Foram localizadas 89 ações judiciais por artroplastia de quadril. A maioria foi ajuizada na Justiça estadual, contou com litisconsórcio passivo, foi impulsionada pela Defensoria Pública, teve o pedido de antecipação de tutela deferido e o pedido considerado procedente, e não houve interposição de recurso à sentença. Mais da metade das ações foram encaminhadas ao NAT-JUS. O grupo de usuários com doenças osteodegenerativas esperou aproximadamente sete meses, enquanto o grupo com agravos de natureza emergencial aguardou quase dois meses para a realização do procedimento, desde a data de distribuição da ação judicial. As ações judiciais por artroplastia de quadril mostraram semelhanças e diferenças em relação a outros pleitos, objeto de outros estudos, o que pode exigir estratégias específicas para sua qualificação. O acesso à artroplastia de quadril, por via judicial, no Sistema Único de Saúde (SUS) no Estado do Rio de Janeiro encontra-se prejudicado, entendendo as demandas como referência de necessidades não atendidas.

This study analyzed the court proceedings, health characteristics of the patients, and plaintiffs' characteristics in lawsuits for hip replacement surgery from public health services in the state of Rio de Janeiro, Brazil. The data employed was from the Technical Support Center for the Judiciary of the Rio de Janeiro Court of Justice (NAT-JUS) database, from January 2016 to December 2018. Data were analyzed according to tiers in the court system. There were 89 lawsuits filed for hip replacement surgery and most of them were tried in the Court of Justice of the State of Rio de Janeiro (TJRJ), with joint plaintiffs, represented by the Public Defender's Office. They had advance relief granted, and were ruled in favor of the plaintiffs, with no appeals filed. More than half of the cases were referred to NAT-JUS. The osteoarthritis group waited approximately seven months, while the emergency conditions group waited nearly two months from the date of filing to obtain the procedure. The lawsuits for hip replacement surgery showed similarities and differences in relation to other claims, object of others studies, which means that the strategies for their qualification. The study found that access to hip replacement surgery related to lawsuits in the Brazilian Unified National Health System (SUS) in the State of Rio de Janeiro is jeopardized, with the claims considered as an indicator of unmet needs

Analizar las características procesuales, médico-sanitarias y de los demandantes de las acciones por artroplastia de cadera, judicializadas contra entes públicos en el estado de Río de Janeiro, Brasil, de 2016 a 2018. Se realizó un estudio retrospectivo, cuyo objeto fueron acciones por artroplastia de cadera, judicializadas contra entes públicos en el estado de Río de Janeiro, localizadas en la base de datos del Sistema Estatal de Regulación y del Núcleo de Apoyo Técnico del Poder Judicial del Tribunal de Justicia de Río de Janeiro (NAT-JUS), protocolizadas entre enero de 2016 y diciembre de 2018. El análisis de los datos se dio por segmento de justicia. Se localizaron 89 acciones judiciales por artroplastia de cadera. La mayoría fueron judicializadas en la justicia estatal, contó con litisconsorcio pasivo, fue impulsada por la Defensoría Pública, tuvo la petición de anticipación de tutela diferida y la petición considerada procedente, y no existió interposición de recurso a la sentencia. Más de la mitad de las acciones se dirigieron al NAT-JUS. El grupo de usuarios con enfermedades osteodegenerativas esperó aproximadamente siete meses, mientras el grupo con agravios de naturaleza urgente aguardó casi dos meses para la realización del procedimiento, desde la fecha de distribución de la acción judicial. Las acciones judiciales por artroplastia de cadera mostraron semejanzas y diferencias, en relación a otros pleitos, objeto de otros estudios, lo que puede exigir estrategias específicas para su cualificación. El acceso a la artroplastia de cadera en el SUS relacionado a las demandas judiciales en el estado de Río de Janeiro se encuentra perjudicado, entendiendo las demandas como hitos de necesidades no atendidas.

Injerto Autólogo de Calcar Femoral como Contrafuerte para Artroplastía en Fracturas Laterales de Cadera

Resumen Las fracturas de cadera representan una causa importante de morbimortalidad en la población adulta, más del 50% corresponden a fracturas laterales, y entre ellas están las inestables que son de difícil manejo. Objetivo: analizar los resultados clínico-radiológicos de pacientes tratados con artroplastía parcial de cadera por fracturas transtrocantericas, utilizando injerto autólogo de calcar femoral. Métodos: el estudio prospectivo de enfoque cuantitativo. La muestra fue de 11 pacientes con fractura transtrocanterica de cadera, en quienes se realizó artroplastía utilizando un injerto de calcar femoral, con un seguimiento entre 4 a 6 meses, en el Hospital Obrero N°2 de Cochabamba. Se analizaron características clínicas, radiológicas y se realiza una descripción de la técnica quirúrgica. Resultados: la edad promedio de la población de estudio fue de 83,4 años, siendo el sexo femenino el 63,6% (7 pacientes) y el sexo masculino 36,4% (4 pacientes). Según la clasificación de la AO para fracturas laterales de cadera, el tipo 31A2.2 fue el principal con 45,5%. Mas del 50% tenían buena estabilidad según las zonas de Gruen. Mas del 60% evolucionaron entre bueno y excelente, según la escala de Harris, con un promedio de 83,65 (rango de 67,1 a 90,8) al tercer mes y un promedio de 84,74 al sexto mes. Conclusiones: el tratamiento de las fracturas laterales de cadera mediante esta técnica, creemos que puede ser una alternativa para el manejo de pacientes con fractura inestable, con altas probabilidades de falla de osteosíntesis y principalmente cuando el paciente y familiares estén de acuerdo con el procedimiento.

Abstract Hip fractures represent an important cause of morbimortality in the adult population, more than 50% correspond to lateral fractures, anc these include unstable fractures that are difficult to manage. Objective: to analyze the clinical and radiological results of patients treatec with partial hip arthroplasty for transtrochanteric fractures, using autologous femoral calcar graft. Methods: prospective study with a quantitative approach. The sample consisted of 11 patients with transtrochanteric hip fracture, who underwent arthroplasty using a femoral calcar graft, with a follow-up of 4 to 6 months, at the Hospital Obrero N°2 of Cochabamba. Clinical and radiological characteristics were analyzed and a description of the surgical technique was made. Results: the average age of the study population was 83.4 years with 63.6% female (7 patients) and 36.4% male (4 patients). According to the AO classification for lateral hip fractures, type 31A2.2 was the main one with 45.5%. More than 50% of the patients had good stability according to the Gruen zones. More than 60% evolved between good and excellent, according to the Harris scale, with an average of 83.65 (range from 67.1 to 90.8) at the third month and an average of 84.74 at the sixth month. Conclusions: we believe that the treatment of lateral hip fractures using this technique can be an alternative for the management of patients with unstable fractures, with a high probability of osteosynthesis failure and mainly when the patient and relatives agree with the procedure.

Artroplastia de quadril no Sistema Único de Saúde: análise dos óbitos hospitalares no Estado do Rio de Janeiro, Brasil / Hip arthroplasty in the Brazilian Unified National Health System: analysis of hospital deaths in the State of Rio de Janeiro, Brazil / Artroplastia de cadera en el Sistema Único de Salud: análisis de las muertes hospitalarias en el Estado de Río de Janeiro, Brasil

O envelhecimento populacional traz desafios ao sistema de saúde. O aumento das doenças degenerativas articulares e a ocorrência de quedas podem demandar a realização de artroplastia de quadril. Objetivou-se avaliar os fatores associados a óbitos hospitalares por artroplastia de quadril no Sistema Único de Saúde (SUS), no Estado do Rio de Janeiro, Brasil. Realizou-se um estudo transversal utilizando o Sistema de Informações Hospitalares do SUS, considerando internações e óbitos por artroplastias de quadril ocorridos entre 2016-2018. As análises consideraram as internações por caráter de atendimento (eletivo, urgência e acidentes ou lesão e envenenamento). Realizou-se regressão logística binária para obter a razão de chance de óbito. A mortalidade aumentou conforme a gravidade da internação. A maioria das internações com óbito foi por fratura de fêmur, demandando cuidados intensivos, tempo médio de permanência de 21,5 dias, envolveu mulheres com 80 anos e mais, da raça/cor branca, que realizaram procedimento em unidades habilitadas em alta complexidade em ortopedia e traumatologia, municipais e classificadas como geral II, localizadas na região de moradia do usuário. A chance de óbito se mostrou significativa para a idade do usuário, uso de unidade de terapia intensiva (UTI) e permanência hospitalar. Espera-se aumento da demanda por artroplastias de quadril e reabilitação física com o envelhecimento populacional. As equipes de saúde devem estar preparadas para lidar com uma população envelhecida. Conhecer os fatores que incrementem o risco de óbito favorece o planejamento e o manejo do cuidado pela equipe hospitalar, inclusive no sentido de diminuir a permanência hospitalar, tão impactante na condição funcional de pessoas idosas.

Population aging brings challenges to the health system. Increased degenerative joint diseases and occurrence of falls may require hip arthroplasties. The objective of this study was to evaluate factors associated with hospital deaths due to hip arthroplasties in the Brazilian Unified National Health System (SUS), in the State of Rio de Janeiro, Brazil. A cross-sectional study was carried out using the Brazilian Hospital Information System of the SUS, considering hospitalizations and deaths from hip arthroplasties that occurred between 2016 to 2018. The analyses considered hospitalizations by type of care (elective, urgency and accidents or injury and poisoning). Binary logistic regression was performed to obtain a ratio for the chance of death. Mortality increased according to the severity of hospitalization. Most of the hospitalizations with death were due to femoral fracture, demanded intensive care, had mean length of stay of 21.5 days, and involved women aged 80 years and over, of the white race/color, who had their procedure performed in municipal units qualified in orthopedics and traumatology of high complexity and classified as general II, located in the patients' region of residence. The chance of death was significant for the age of the patient, use of intensive care unit (ICU), and length of hospital stay. We expect an increase in the demand for hip arthroplasties and physical rehabilitation due to population aging. Health teams must be prepared to deal with an ageing population. Knowing the factors that increase the risk of death favors care planning and management by hospital staff, including in the reduction of hospital stay, which is so impactful on the functional condition of the elderly.

El envejecimiento poblacional trae desafíos al sistema de salud. El aumento de las enfermedades degenerativas articulares y la incidencia de caídas pueden demandar la realización de artroplastias de cadera. Tuvo como objetivo evaluar los factores asociados a las muertes hospitalarias por artroplastias de cadera en el Sistema Único de Salud (SUS), en el Estado de Rio de Janeiro, Brasil. Se realizó un estudio transversal utilizando el Sistema de Información Hospitalaria del SUS, considerando hospitalizaciones y muertes por artroplastias de cadera ocurridas entre 2016-2018. Los análisis consideraron las hospitalizaciones según la naturaleza de la atención (electiva, urgencia y accidentes o lesiones e intoxicaciones). Se realizó una regresión logística binaria para obtener la razón de probabilidad de muerte. La mortalidad aumentó según la gravedad de la hospitalización. La mayoría de las hospitalizaciones con muerte se debió a la fractura de fémur, y requirió cuidados intensivos, tiempo promedio de estancia de 21,5 días, correspondió a mujeres de 80 años o más, de raza/color blanca, a quienes se sometió al procedimiento en unidades habilitadas de alta complejidad en ortopedia y traumatología, municipal y clasificadas como general II, ubicadas en la región de residencia del usuario. La probabilidad de muerte se mostró significativa para la edad del usuario, el uso de la unidad de cuidados intensivos (UCI) y la estancia hospitalaria. Se espera que la demanda de artroplastias de cadera y rehabilitación física aumente a medida que la población envejece. Los equipos de salud deben estar preparados para atender a una población que envejece. El conocimiento de los factores que incrementan el riesgo de muerte favorece la planificación y el manejo del cuidado por parte del equipo hospitalario, incluso en el sentido de reducir la estancia hospitalaria, que tanto afecta la condición funcional de la persona mayor.

Planificación pre-operatoria digital en artroplastia total de cadera / Digital templating in total hip arthroplasty

Introducción: La planificación preoperatoria favorece la realización de un acto quirúrgico sin complicaciones. Actualmente existe escasa información a nivel nacional sobre la eficacia de la planificación pre-operatoria digital por lo que el objetivo del presente estudio es el analizar los resultados de la implementación de esta estrategia en una población de pacientes con indicación de artroplastia total de cadera. Materiales y métodos: Estudio observacional, prospectivo, analítico. Se realizó un muestreo no probabilístico de casos consecutivos atendidos en la Cátedra de Ortopedia y Traumatología de la Facultad de Ciencias Médicas (U.N.A). Fueron captados pacientes >18 años con indicación de ATC, entre diciembre 2018 ­ octubre 2019, previo consentimiento informado. Se relevaron datos cuya caracterización fue posible mediante un instrumento establecido previamente, ingresado en base Excel. Se utilizó el software TraumaCad® versión 2.5 de Brainlab y marcadores radiológicos King Mark®. Fueron comparados ambos tipos de planificación ejecutando análisis estadísticos con el software R.v3.4.2., siendo un valor p ˂0.05, considerado estadísticamente significativa. Resultados: 57 pacientes fueron evaluados con el método digital y los resultados fueron comparados con los de 42 pacientes en los que se utilizó una planificación manual. La relación masculino-femenino fue 1/1, siendo los del grupo de 50 a 60 años, los más afectados. La coxartrosis primaria y la necrosis ósea aséptica fueron los diagnósticos más frecuentes. El tiempo quirúrgico, la correlación entre planificación y resultados para componentes acetabular, femoral, presentaron mejores resultados en el grupo de pacientes con planificación digital. Conclusión: La planificación digital comparada con la manual presentó mayor eficacia.

Introduction: Preoperative planning allows a surgical act without complications. It can be manual or digital. Its usefulness in total hip arthroplasty (ATC) is important, being digital seemingly more beneficial since it reduces surgical time and complications. The present study analyzed the effectiveness of the digital modality. Materials and methods: Observational, prospective, analytical study. Non-probabilistic sampling of consecutive cases attended in Department of Orthopedics and Traumatology of the Medicine Scholl (Universidad Nacional de Asunción). Patients> 18 years of age were indicated with ATC indication, between december 2018 to october 2019, with prior informed consent. Data whose characterization was made possible by means of a previously established instrument, entered in Excel basis, were released. Each patient had both types of planning: manual and digital. For TraumaCad® version 2.5 Brainlab software and King Mark® radiological markers were used for the digital. Both types of planning were compared by executing statistical analyzes with the software R.v3.4.2., being a value p <0.05, considered statistically significant. Results: 57 patients were evaluated with the digital method and 42 with the manual. The male-female ratio was 1/1, with those in the 50-60 age group being the most affected. The most frequent reason for consultation was hip pain, with primary coxarthrosis and aseptic bone necrosis being their cause. The consultation time 1 and surgery was 12.5 days. The surgical time, the correlation between planning and results for acetabular, femoral components, were more effective with digital planning. Conclusion: Digital planning compared to the manual is more effective.

Assessment of the use of tranexamic acid after total knee arthroplasty / Avaliação do uso do ácido tranexâmico durante a artroplastia total do joelho

ABSTRACT Objective: To evaluate the profile of blood loss and blood transfusions after the introduction of Tranexamic acid (TXA) in a tertiary university hospital in Brazil. Methods: 173 patients were retrospectively divided into two groups: the ones who received TXA and the control group. Hemoglobin levels (Hb), drain output, transfusion rates, and thromboembolic events were measured. Results: Among the patients included in this study, 82 cases received TXA. Blood transfusion occurred in 3 cases of the TXA group (3.7%), and in 27 control group cases (29.7%; p < 0.001). The average Hb decrease was 2.7 g/dl (± 1.39) and the median drain output was 270 mL in the TXA group. In the control group, the values were 3.41 g/dl (± 1.34; p < 0.001) and 460 mL (p < 0.001), respectively. Thromboembolic events occurred in 2 TXA group cases (2.4%) and in 3 control group cases (3.3%; p > 0.999). Conclusion: TXA was effective in reducing blood transfusion rates, Hb decrease, and drain output on the 1st postoperative day without increasing thromboembolic events. Level of evidence III, Retrospective comparative study.

RESUMO Objetivo: Avaliar o perfil de perda sanguínea e hemotransfusões após a introdução da prática do uso de ácido tranexâmico (ATX) em um serviço terciário universitário brasileiro. Métodos: 173 pacientes foram separados retrospectivamente em dois grupos: uso do ATX e controle. Foram analisados valores da hemoglobina (Hb), débito do dreno, necessidade transfusional e complicações tromboembólicas. Resultados: Dentre os pacientes admitidos no estudo, 82 fizeram uso do ATX. Hemotransfusão ocorreu em 3 casos do grupo ATX (3,7%) e em 27 controles (29,7%, p < 0,001). A queda de Hb teve média de 2,7 g/dl (± 1,39) e o débito do dreno, mediana de 270 ml no grupo ATX. No grupo controle, os valores foram de 3,41 g/dl (± 1,34; p < 0.001) e de 460 ml (p < 0.001), respectivamente. Eventos tromboembólicos ocorreram em 2 casos (2,4%) no grupo ATX e em 3 no controle (3,3%, p > 0.999). Conclusão: o uso do ATX foi efetivo em reduzir hemotransfusões, queda de Hb e débito drenado no 1° dia pós-operatório, sem aumentar eventos tromboembólicos. Nível de evidência III, Estudo retrospectivo comparativo.

Long-term Follow-up of Patellar Nonresurfacing in Total Knee Arthroplasty

BACKGROUND: We aimed to confirm the long-term effect of patellar nonresurfacing (patellar decompression) in preventing anterior knee pain after total knee arthroplasty (TKA) and to investigate the possible complications.METHODS: Among patients who underwent primary TKA after being diagnosed as having advanced osteoarthritis (Kellgren-Lawrence grade 4) at our institution from January 2004 to December 2010, 121 patients who were followed up for more than 7 years were included in this study. Patients who underwent TKA with and without patellar decompression were classified as the study group and control group, respectively. A clinical knee rating score was used to compare the postoperative clinical outcomes between groups. To identify complications after patellar decompression, simple radiographs (weight-bearing anteroposterior and lateral views, patella in 30° and 45° axial views, and whole scanogram) were taken during follow-up.RESULTS: There were no complications such as patellar fracture, osteonecrosis, and subluxation. At 2 years after surgery, the prevalence of anterior knee pain was 12.7% and 18.0% in the study group and control group, respectively (p = 0.42), and the number of patients with patellofemoral osteoarthritis grade II or over was lower in the study group (p = 0.03). At 7 years after surgery, the prevalence of anterior knee pain was 18.3% and 24.0% in the study group and control group, respectively (p = 0.45), and there was no statistically significant intergroup difference in the number of patients with patellofemoral osteoarthritis grade II or over (p = 0.11).CONCLUSIONS: Patellar nonresurfacing TKA reduces anterior knee pain in the early postoperative period. The procedure can be considered a relatively safe option with fewer complications; however, its effectiveness appears to decrease over time.

Artroplastia de quadril no SUS: oferta e utilização no estado do Rio de Janeiro / Hip arthroplasty in SUS: offer and use in the state of Rio de Janeiro / Artroplastia de cadera en el SUS: oferta y realización en el estado de Río de Janeiro

A artroplastia de quadril (AQ) é um procedimento custo-efetivo empregado para o tratamento de condições como a osteoartrose de quadril e fraturas de acetábulo e de colo femoral em idosos. Este artigo objetiva descrever a oferta de AQ no SUS e analisar aspectos relativos à realização desse procedimento, entre 2016 e 2018, no estado do Rio de Janeiro. Trata-se de um estudo descritivo, no qual foram incluídas as unidades hospitalares que efetuaram, pelo SUS, pelo menos um tipo de AQ entre 2016 e 2018 no estado do RJ. O perfil das unidades foi construído utilizando a ferramenta TABNET do CNES. Verificou-se que 69 unidades hospitalares realizaram pelo menos uma AQ no período. Parte substancial dessas unidades localiza-se na Região Metropolitana I, não é habilitada em alta complexidade em ortopedia e traumatologia, são municipais e pertencem ao tipo "Geral I com UTI". As unidades que mais realizaram AQ foram as estaduais e as especializadas com UTI. No período, houve decréscimo no número total de AQ realizadas, especialmente artroplastias emergenciais e de alta complexidade. As unidades hospitalares, em todas as regiões, contam com a equipe mínima de profissionais, exceto terapeuta ocupacional e fisiatra. Mesmo enfrentando um contexto de crise, as unidades estaduais destacaram-se na realização do procedimento. Considerando que o Brasil já apresenta defasagem assistencial, a variação negativa no número de AQ, em especial as emergenciais, merece atenção, pois pode indicar maior dificuldade de acesso da população ao procedimento.

Hip arthroplasty (HA) is a cost-effective procedure to treat conditions such as hip osteoarthritis and acetabulum and femoral neck fractures in the older adults. This article describes the supply of HA in the SUS and analyzes aspects related to the performance of this procedure between 2016 and 2018, in the state of Rio de Janeiro (RJ), Brazil. This is a descriptive study that included the hospital units that performed at least one type of HA by SUS between 2016 and 2018 in the state. The units' profiles were built using CNES TABNET tool. Results showed that 69 hospital units in the state performed at least one HA during the period. A substantial part of these units are located in the Metropolitan Region I, are not highly qualified in orthopedics and traumatology, are municipal and belong to the type "General I with ICU" (Intensive Care Unit). The units that most performed HA were state units and specialized with ICU. In the period, the total number of HA performed decreased, especially among emergency and high complexity arthroplasties. Hospital units in all regions have the minimum staff, except for occupational therapist and physiatrist. Even facing a crisis context, the state units stood out in the procedure. Considering that Brazil already has a care gap, the negative variation in the number of HA, especially the emergency ones, deserves attention, since it may indicate greater difficulty for the population to access the procedure.

La artroplastia de cadera (AC) es un procedimiento rentable empleado para tratar afecciones como la osteoartritis de cadera y las fracturas de acetábulo y de cuello femoral en los ancianos. Este artículo tiene como objetivo describir la oferta de AC en el Sistema Único de Salud (SUS) y analizar los aspectos relacionados con el desempeño de este procedimiento, en el período entre 2016 y 2018, en el estado de Río de Janeiro (RJ). Este es un estudio descriptivo, llevado a cabo con unidades hospitalarias que habían realizado mediante el SUS, al menos, un tipo de AC, entre 2016 y 2018, en el estado de RJ. El perfil de las unidades se construyó con la herramienta CNES TABNET. Se encontró que 69 unidades hospitalarias en el estado realizaron al menos una AC durante el período. Una parte importante de estas unidades están ubicadas en la región metropolitana I, no están altamente calificadas en ortopedia y traumatología, son municipales y pertenecen al tipo "General I con UCI". Las unidades que más realizaron AC fueron estaduales y especializadas con UCI. En el período, hubo una disminución en el número total de AC realizadas, especialmente artroplastias de emergencia y de alta complejidad. Las unidades hospitalarias en todas las regiones tienen el personal mínimo, excepto el terapeuta ocupacional y el fisiatra. Incluso frente a un contexto de crisis, las unidades estaduales se destacaron en la realización del procedimiento. Teniendo en cuenta que Brasil ya tiene una brecha de atención, la variación negativa en el número de AC, sobre todo los de emergencia, merece atención, ya que puede indicar una mayor dificultad para que la población acceda al procedimiento.

Anesthetic considerations for surgical treatment of geriatric hip fracture

Hip fracture is one of the most common traumatic fractures in geriatric patients. With the increase in the geriatric population, physicians are more concerned about anesthetic management of these patients and a lot of articles have been published in relation to geriatric hip fracture. Due to age related comorbidities and physical status, perioperative management of these patients are complex and related to mortality and morbidity. Anesthesia and pain control for these patients are directly related to the postoperative outcome. This article summarizes the most recent opinions about perioperative management of geriatric hip fracture patients at the point of preoperative evaluation, anesthetic managements, and pain control.

Optimal location of local anesthetic injection in the interspace between the popliteal artery and posterior capsule of the knee (iPACK) for posterior knee pain after total knee arthroplasty: an anatomical and clinical study / 대한마취과학회지

BACKGROUND: This study aimed to determine the optimal location of local anesthetic injection in the interspace between the popliteal artery and posterior capsule of the knee (iPACK), using the anatomical pattern of the articular branch of tibial nerve (ABTN). We hypothesized that injection at the level of ABTN forming a popliteal plexus would mainly spread throughout the popliteal fossa without contacting the tibial or peroneal nerves. METHODS: The anatomical study included 30 soft cadavers. Ultrasound-guided dye injection was performed in legs of 10 cadavers after identifying the position of the ABTN and surrounding structures, followed by dissection to assess its spread. Clinical study was conducted in 15 patients undergoing total knee arthroplasty (TKA) with ultrasound-guided injection in the iPACK. All patients also received continuous adductor canal block. Sensorimotor function of the tibial and common peroneal nerves was determined. RESULTS: In the distal portion of the popliteal fossa, the tibial nerve and popliteal vessels ran superficially and closely together. The trajectory of ABTN ran lateral to the popliteal vasculature, forming a plexus towards the posterior capsule of the knee below the medial side of the upper edge of lateral femoral condyle. In cadavers, the ABTN and surrounding area of the popliteal plexus were stained with dye after injection. In the clinical study, no patients experienced complete motor or sensory blocks. CONCLUSIONS: We described a modified iPACK technique injection at the level of the ABTN forming the popliteal plexus, and it may constitute an optional anesthetic regimen to promote early ambulation following TKA.

Biomechanics of Hip and Hip Replacement Arthroplasty / 대한정형외과학회잡지

The biomechanics study of the hip is aims to understand and explore the dynamic principles of weight transfer through the hip joint. This basic science knowledge can be applied in a variety of areas, including degenerative joint diseases and hip replacement arthroplasty. In particular, understanding of the biomechanics of the hip has led to the development of materials, design and fixation of implants, and it can be applied in various areas, such as the selection of surgical methods and the location of the implant. Moreover, it is essential to have good knowledge of the biomechanics of the hip to achieve better clinical results for patients. Therefore, this paper introduces the basic knowledge and biomechanical characteristics of a normal hip and hip replacement arthroplasty, which are needed to approach the biomechanics of the hip.

Clinical and Radiological Outcomes of Rectangular Tapered Cementless Stem According to Proximal Femoral Geometry in Elderly Asian Patients / 대한고관절학회지

PURPOSE: A retrospective analysis of mid- to long-term clinical and radiological outcomes of Korean patients over 60 years of age who underwent hip arthroplasty using a cementless rectangular tapered stem according to Dorr proximal femur geography. MATERIALS AND METHODS: From January 2007 to December 2013, 107 patients (112 hips) underwent hip arthroplasty using the C2 stem. The mean age of patients was 77.4 years (range, 60–91 years) and the mean follow-up duration was 91.1 months (range, 60–116 months). All patients were evaluated clinically and radiologically with special attention to Dorr femoral bone classification, implant fixation, radiolucent line (RLL), and thigh pain. RESULTS: All implants demonstrated radiographic evidence of stable fixation by bone ingrowth without any change in position. The mean Harris hip score improved from 65.5±16.0 (preoperative) to 90.5±15.9 (final follow-up) (P<0.001). Incidence of RLLs, stress shielding, and thigh pain was highest in patients with Dorr type A (RLL, P=0.021; stress shielding, P=0.030; thigh pain, P<0.001). One stem revision was performed due to deep infection. The Kaplan–Meier survival rate of the femoral stem was 97.6%. CONCLUSION: The overall survival rate of the C2 stems was greater than 97%; there were no significant differences in survival of the C2 stem according to the Dorr classification. The incidences of RLL of thigh pain and RLL were significantly different among Dorr classifications and (highest in patients with Dorr type A).

Is the Oral Chemical Prophylaxis Necessary for the Prevention of Venous Thromboembolism after Joint Arthroplasty in a Korean Population? / 대한고관절학회지

PURPOSE: Venous thromboembolism (VTE) is a serious complication that may occur after a major orthopedic surgery. The aim of the present study was to determine the necessity of a chemical thromboprophylactic agent (rivaroxaban [RXB]) by analyzing the prevalence of VTE in Korean arthroplasty patients who received RXB for prophylaxis compared with those who did not receive RXB. MATERIALS AND METHODS: A total of 2,603 patients who underwent knee or hip arthroplasty between 1996 and 2017 were prospectively evaluated. Of these, 1,608 patients underwent surgery before January 2010 and were not administered any type of prophylaxis after surgery; the remaining 995 underwent surgery after 2010 and received oral RXB once daily for 5–13 days from the day after hemovac drain removal to postoperative day 14. RESULTS: The primary study outcome was the prevalence of VTE, pulmonary embolism or death during follow up. The overall incidence of VTE was 1.69% (n=44); of these, 12 occurred in the RXB group and 32 in the non-prophylactic group. The odds ratio of VTE in the RXB group was 0.61. However, the statistical power of the study was 0.313 due to the low incidence of VTE. CONCLUSION: Treatment with oral chemical prophylaxis decreased the incidence of VTE after knee or hip arthroplasty in a Korean population. Furthermore, no serious complications occurred after administering oral RXB, which, coupled with its convenience, suggests oral RXB offers an attractive alternative to other agents. However, we recommend that further studies, including a multicenter study, be conducted to achieve adequate statistical power.

Clinical Outcomes of Bipolar Hemiarthroplasty versus Total Hip Arthroplasty: Assessing the Potential Impact of Cement Use and Pre-Injury Activity Levels in Elderly Patients with Femoral Neck Fractures / 대한고관절학회지

PURPOSE: This study was performed to analyze the potential impact of cement use and favorable pre-injury activity on clinical outcomes of bipolar hemiarthroplasty (BHA) compared with total hip arthroplasty (THA) in elderly patients with femoral neck fractures. MATERIALS AND METHODS: Systematic review and meta-analysis of 12 clinical studies (5 randomized controlled trials and 7 comparative studies). Subgroup analysis was performed based on type of fixation method (cemented vs. cementless) and in the patient with independent ambulation, respectively. RESULTS: A significantly higher dislocation rate was observed in patients treated with THA compared with those treated with BHA in individuals capable of independent ambulation before injury (odds ratio [OR], 0.17; 95% confidence interval [CI], 0.05–0.62; P=0.05, Z=1.98). Also, the dislocation rate was significantly higher in patients treated with cemented THA compared with those treated with cemented BHA (OR, 0.18; 95% CI, 0.05–0.62; P=0.006, Z=2.73). EQ-5D was significantly higher in those treated with cemented THA compared with patients treated with cemented BHA. Lastly, HHS was significantly higher in patients treated with cementless THA compared with those treated with cementless BHA. CONCLUSION: An increase in the dislocation rate was observed when THA was performed in elderly patients with femoral neck fracture and who were pre-injury independent walkers. In addition, cemented THA was associated with a higher dislocation rate compared with cemented BHA. However, the dislocation rate in those treated with cementless THA were similar to patients treated with cementless BHA. With regards to functional score, THA was superior to BHA in both cementless and cemented fixation.

Preoperative Temporary Discontinuation of Aspirin Medication Does Not Increase the Allogeneic Transfusion Rate and Blood Loss in Primary Total Hip Arthroplasty / 대한고관절학회지

PURPOSE: This study aims to determine whether preoperative temporary discontinuation of aspirin (100 mg/d) use is a safe procedure does not increase blood loss and the need for transfusion after total hip arthroplasty (THA). MATERIALS AND METHODS: This study retrospectively reviewed 219 patients who underwent consecutive primary THA from January 2012 to December 2018. They were divided into the experimental group (42 cases) that discontinued aspirin intake 7 days before surgery and the control group (150 cases) that had no history of use of antiplatelet agents. To compare initial blood loss between the two groups, we analyzed the changes hemoglobin (Hb) levels and hematocrit values measured preoperatively and in lowest values measured during three days after surgery. In addition, transfusion rate was compared within the first two postoperative weeks between the two groups. A multiple logistic regression was performed to assess the association of transfusion with age, gender, use of antiplatelet agents, preoperative anesthetic risk, body weight and preoperative Hb. RESULTS: No statistically significant difference was found in the changes in lowest Hb level (P=0.30) and hematocrit value (P=0.14) measured preoperatively and for three days after surgery between the experimental group and the control group. There was no statistically significant association between transfusion and the use of antiplatelet agents, and preoperative Hb level was identified as a factor that affected the need for transfusion (odds ratio, 0.427; P=0.001). CONCLUSION: Preoperative temporary discontinuation of aspirin use for 7 days before surgery did not increase initial blood loss after THA and the need for transfusion in the first two postoperative weeks compared to patients with no history of use of antiplatelet agents.

Effect of Spine-Pelvis Relationship in Total Hip Arthroplasty / 대한고관절학회지

When spine-pelvic motion is normally coordinated, the pelvis may tilt posteriorly and acetabular anteversion may increase as the patient's position changes from standing to sitting; this scenario allows for improved clearance of the femoral head and neck during hip flexion. However, changes in the mobility of the spine and pelvis may result in impingement after total hip arthroplasty (THA), with the most obvious complication being dislocation. Understanding the spinal-pelvic relationship in the sagittal plane is essential for planning THA in patients with spinal fusion or a known spine disease. Careful attention should be payed to the cup position when performing THA on patients with an increased risk of dynamic impingement.