Metallic artifact suppression with MAVRIC-SL in magnetic resonance imaging for assessing chronic pain after hip or knee arthroplasty / Supressão do artefato metálico na ressonância magnética com MAVRIC-SL na avaliação da dor crônica em artroplastia de quadril ou joelho

Abstract Objective: To analyze the association between osteolysis at the prosthesis interfaces, as determined by magnetic resonance imaging (MRI) with multiacquisition variable-resonance image combination selective (MAVRIC-SL) sequences, and clinical severity after knee or hip arthroplasty, as well as to assess interobserver and intraobserver agreement on periprosthetic bone resorption. Materials and Methods: This was a cross-sectional study of 47 patients (49 joints) under postoperative follow-up after knee or hip arthroplasty, with chronic pain, between March 2019 and August 2020. All of the patients completed the Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) questionnaire. The component interfaces were evaluated and ordered into two groups: osseointegrated and osteolytic. Nonparametric tests were used. Results: There were significant differences between the two groups in terms of the mean WOMAC scores: total (p = 0.010); stiffness domain (p = 0.047); and function (p = 0.011) domains. There was substantial interobserver and intraobserver agreement for most analyses of the components. Conclusion: Periprosthetic osteolysis appears to be associated with clinical complaints of pain in the post-arthroplasty scenario, and MAVRIC-SL provides reproducible assessments. It could prove to be an important tool for orthopedists to use in the evaluation of challenging cases of chronic pain after arthroplasty.

Resumo Objetivo: Analisar associação entre osteólise nas interfaces protéticas por ressonância magnética com sequências MAVRIC-SL e a gravidade clínica dos pacientes submetidos a artroplastias de joelho ou quadril. Determinar concordância intraobservador e interobservador na reabsorção óssea peri-implante. Materiais e Métodos: Foi realizado estudo transversal entre março de 2019 e agosto de 2020, com 47 pacientes (49 articulações) em seguimento pós-operatório de artroplastias de joelho ou quadril, com dor crônica, que responderam ao questionário WOMAC. As interfaces dos componentes foram avaliadas e definiram dois grupos: osteointegrado e osteólise. Testes não paramétricos foram usados. Resultados: Houve diferença significativa na média do escore WOMAC entre os grupos (p = 0,010), assim como nos domínios rigidez (p = 0,047) e função (p = 0,011). Houve concordância substancial interobservador e intraobservador para a maioria dos componentes analisados. Conclusão: Osteólise periprótese parece estar associada com a queixa clínica de dor pós-artroplastia, com avaliação reprodutível pela MAVRIC-SL. Isto pode ser uma importante ferramenta para o ortopedista na avaliação de casos desafiadores de dor crônica pós-artroplastia.

Correlation between body mass index and joint pain intensity with gait performance in individuals with osteoarthritis / Correlação entre o índice de massa corporal e intensidade da dor articular com o desempenho da marcha em indivíduos com osteoartrite

ABSTRACT BACKGROUND AND OBJECTIVES: Individuals with osteoarthritis (OA) often have joint pain and are overweight or obese. Thus, the objective of this study was to observe whether there is correlation between body mass index and joint pain intensity with gait performance in individuals with OA. METHODS: Cross-sectional study, which evaluated 60 volunteers, being 30 with clinical diagnosis of knee osteoarthritis and 30 without the disease, of both sexes and aged between 50-82 years. Joint pain intensity was assessed using the Visual Analog Scale, gait-related functional tasks using the Dynamic Gait Index, and the functional mobility using the Timed Up and Go test. RESULTS: There was a correlation between overweight/obesity and high levels of joint pain intensity (p=0.018), with worse performance in gait-related functional tasks (p=0.000) and with worse functional mobility (p=0.034) only for the individuals with OA. High levels of joint pain intensity also correlated with worse performance in the gait-related functional tasks (p=0.000) in the OA group, and also with worse functional mobility in the OA group (p=0.001) and also in the group of individuals without the disease (p=0.032). CONCLUSION: This study identified a correlation between overweight/obesity and high levels of joint pain intensity and worse gait performance in individuals with osteoarthritis. High levels of pain intensity also correlated with worse gait performance in individuals with OA.

resumo JUSTIFICATIVA E OBJETIVOS: Indivíduos com osteoartrite (OA) frequentemente apresentam dor articular e sobrepeso ou obesidade. Assim, o objetivo deste estudo foi observar se existe correlação entre o índice de massa corporal e a intensidade da dor articular com o desempenho da marcha em indivíduos com OA. MÉTODOS: Estudo de corte transversal, que avaliou 60 indivíduos, sendo 30 com diagnóstico clínico de osteoartrite de joelho e 30 sem a doença, de ambos os sexos e com faixa etária entre 50 e 82 anos. A intensidade da dor articular foi avaliada pela Escala Analógica Visual, as tarefas funcionais relacionadas à marcha pelo Dynamic Gait Index e a mobilidade funcional pelo teste Timed Up and Go. RESULTADOS: Houve correlação entre o sobrepeso/obesidade e níveis elevados de intensidade da dor articular (p=0,018), com um pior desempenho nas tarefas funcionais relacionadas à marcha (p=0,000) e com menor mobilidade funcional (p=0,034) apenas para os indivíduos com OA. Os níveis elevados de intensidade de dor articular também mostraram correlação com um pior desempenho nas tarefas funcionais relacionadas à marcha (p=0,000) no grupo com OA, e ainda, com uma menor mobilidade funcional no grupo com OA (p=0,001) e também no grupo de indivíduos sem a doença (p=0,032). CONCLUSÃO: Este estudo identificou correlação entre o sobrepeso/obesidade com níveis elevados de intensidade da dor articular e com um pior desempenho na marcha nos indivíduos com OA. Os elevados níveis de intensidade da dor também mostraram correlação com pior desempenho na marcha nos indivíduos com OA.

Radiographic findings in acromegaly: pictorial essay / Achados radiográficos da acromegalia: ensaio iconográfico

Abstract Acromegaly is an uncommon metabolic disorder, often diagnosed after a long delay. One symptom seen in many patients with acromegaly is arthralgia, a finding that calls for the use of conventional radiography, which can reveal subtle changes that can go unnoticed. The objective of this pictorial essay is to portray the radiographic aspects of acromegaly, seeking to demonstrate the importance of conventional radiography, which, despite its simplicity, can suggest the diagnosis, even in the early stages, thus altering the clinical course of the disease.

Resumo A acromegalia é um distúrbio metabólico pouco frequente, muitas vezes apresentando grande atraso diagnóstico. A artralgia é um dos sintomas mais comumente encontrados nos pacientes acromegálicos, motivando a realização de radiografias convencionais, as quais podem apresentar achados sutis que podem passar despercebidos. O objetivo deste ensaio é retratar os achados radiográficos da acromegalia, buscando demonstrar a importância deste método que, apesar de simples, pode sugerir o diagnóstico, mesmo em fases iniciais, alterando assim o curso clínico da doença.

The impact of Chikungunya chronic arthralgia on women's upper limbs motor function: a cross-sectional study / O impacto da artralgia crônica pós-Chikungunya na função motora dos membros superiores de mulheres: um estudo transversal / El impacto de la artralgia crónica poschikunguña en la función motora del miembro superior de mujeres: un estudio transversal

ABSTRACT Post-Chikungunya chronic arthralgia (PCCA) may lead to musculoskeletal repercussions and functional loss. The objective was to assess the upper limb physical disability and symptoms during daily, work, and leisure activities of women presenting PCCA compared to healthy controls (HC). This was a cross-sectional study conducted with 52 women. The participants were divided into PCCA (37) and HC (15) groups. Handgrip strength, range of motion, level of pain (numerical rating scale), and participants' physical disability and symptoms (Disabilities of the Arm, Shoulder, and Hand Questionnaire - DASH) were evaluated. Differences between groups were evaluated using the Students t-test and Pearson's correlations. The chi-square test was applied for categorical variables. The significance was set at α=0.05. The disease duration was 19.5±13.1 months. We found no differences between groups for peak force (PCAA:23.6±7.4kgf; HC: 24.5±6.2kgf; p=0.676). The results showed a significant difference between groups regarding range of motion (PCCA: 63.5±17.3o; HC: 77.2±9.6o), level of hand pain (PCCA: 5.8±2.2; HC: 0.4±1.5), and upper limbs functional levels (PCCA: 44.5±17.4; HC: 16.2±20.5). Participants related severe difficulty or inability to perform tasks such as opening a jar (78.4%), placing objects above head height (48.7%), doing heavy household chores (56.8%), and gardening (51.4%). Impairment in the upper limb physical function in daily, work, and leisure activities shows the higher prevalence in the long-term.

RESUMO A artralgia crônica pós-Chikungunya (ACPC) pode gerar repercussões musculoesqueléticas e perda funcional. Nesse sentido, o objetivo deste estudo foi avaliar a incapacidade física e os sintomas de membros superiores de mulheres com ACPC durante atividades diárias, laborais e de lazer comparadas aos controles saudáveis (CS). Para tanto, realizou-se um estudo transversal conduzido com 52 mulheres. As participantes foram divididas entre os grupos com ACPC (37) e CS (15). Foram avaliados força de preensão, amplitude de movimento (ADM), nível de dor (escala numérica de dor) e incapacidade física e sintomas por meio do Disabilities of the Arm, Shoulder and Hand Questionnaire (Dash). Diferenças entre os grupos foram avaliadas pelo teste t de Student e correlações de Pearson. O teste qui-quadrado foi utilizado para variáveis categóricas e α=0,05 foi estabelecido como nível de significância. Verificou-se que a duração da ACPC foi de 19,5±13,1 meses. Não houve diferença entre os grupos para a força pico (ACPC: 23,6±7,4kgf; CS: 24,5±6,2kgf; p=0,676). Os resultados demonstraram diferença significativa entre os grupos em termos de ADM (ACPC: 63,5±17,3o; CS: 77,2±9,6o), nível de dor nas mãos (ACPC: 5,8±2,2; CS: 0,4±1,5) e níveis funcionais dos membros superiores (ACPC: 44,5±17,4; CS: 16,2±20,5). As participantes relataram extrema dificuldade ou incapacidade para realizar tarefas como abrir um pote (78,4%), colocar objetos em um local acima da cabeça (48,7%), realizar atividades domésticas pesadas (56,8%) e atividades de jardinagem (51,4%). Conclui-se que a função física dos membros superiores durante as atividades diárias, laborais e de lazer constitui o maior comprometimento apresentado a longo prazo.

RESUMEN La artralgia crónica poschikunguña (ACPC) puede tener como efecto repercusiones musculoesqueléticas y pérdida funcional. En este sentido, el objetivo de este estudio fue evaluar la discapacidad física y los síntomas de miembros superiores de mujeres con ACPC durante las actividades diarias, laborales y de ocio en comparación con controles sanos (CS). Por ello, se realizó un estudio transversal con 52 mujeres. Las participantes se dividieron en los grupos ACPC (37) y CS (15). La fuerza de agarre, el rango de movimiento (ROM), el nivel de dolor (escala numérica de dolor), la discapacidad física y los síntomas se evaluaron mediante el Disabilities of the Arm, Shoulder and Hand Questionnaire (Dash). Las diferencias entre los grupos se evaluaron con la aplicación de la prueba t de Student y las correlaciones de Pearson. Se utilizó la prueba de chi-cuadrado para las variables categóricas y se estableció como nivel de significación α=0,05. Se encontró que la duración de la ACPC fue de 19,5±13,1 meses. No hubo diferencia entre los grupos para la fuerza máxima (ACPC: 23,6±7,4kgf; CS: 24,5±6,2kgf; p=0,676). Los resultados mostraron una diferencia significativa entre los grupos respecto al ROM (ACPC: 63,5±17,3o; CS: 77,2±9,6o), el nivel de dolor en la mano (ACPC: 5,8±2,2; CS: 0,4±1,5) y los niveles funcionales de miembros superiores (ACPC: 44,5±17,4; CS: 16,2±20,5). Las participantes informaron una extrema dificultad o incapacidad para realizar tareas como abrir un frasco (78,4%), poner objetos en un lugar más alto (48,7%), realizar actividades domésticas pesadas (56,8%) y actividades de jardinería (51,4%). Se concluyó que la función física de los miembros superiores durante las actividades diarias, laborales y de ocio constituye el mayor compromiso a largo plazo.

Clinical Signs and Symptoms Associated with COVID-19: A Cross Sectional Study

ABSTRACT: Covid-19 is a viral disease that has spread throughout the world, becoming a pandemic. Dysgeusia and anosmia are some of its most frequent symptoms. The aim of the study was to determine the frequent signs and symptoms associated with COVID-19 patients. A cross-secional study from 370 patients with acute respiratory illness admitted by emergenc y services of a hospital in Acapulco. An institutional survey was applied to all patients as a data collection instrument, and a SARS-CoV-2 test, by RT-PCR processed by a certified laboratory. Statistical analysis was performed using the STATA V13 program. The numerical variables without normality were reported in medians, 25th and 75th percentiles, and the Mann W ithney U test was performed for differences between groups. The categorical variables were presented in percentages and differences between groups with Chi-square test. A generalized linear models (GLM) analysis was carried out to determine the most frequent symptoms and signs associated with COVID-19. Clinical signs and symptoms associated to COVID-19 in the bivariate análysis were dysgeusia, odynophagia, anosmia, arthralgia, myalgia, conjunctivitis, and age older than 40 years. In the final multivariate model only age older than 40 years (OR) 2.2; CI 95 % 1.3,3.8) and dysgeusia (OR 2.1; CI95 % 1.2,3.6) kept significance. Dysgeusia, odynophagia, anosmia, arthralgia, myalgia and conjunctivitis are clinical signs and symptoms that can appear in the early stages of the disease, so they could be important for an early diagnosis.

RESUMEN: El Covid-19 es una enfermedad viral que se ha extendido por todo el mundo, convirtiéndose en una pandemia. La disgeusia y la anosmia son algunos de sus síntomas más frecuentes. El objetivo del estudio fue determinar los signos y síntomas frecuentes asociados con los pacientes con COVID-19. Estudio transversal de 370 pacientes con enfermedad respiratoria aguda ingresados por los servicios de emergencia de un hospital de Acapulco. A todos los pacientes se les aplicó una encuesta institucional como instrumento de recolección de datos, y una prueba de SARS-CoV-2, por RT-PCR procesada por un laboratorio certificado. El análisis estadístico se realizó utilizando el programa STATA V13. Las variables numéricas sin normalidad se reportaron en medianas, percentiles 25 y 75, y se realizó la prueba U de Mann Withney para diferencias entre grupos. Las variables categóricas se presentaron en porcentajes y diferencias entre grupos con la prueba de Chi-cuadrado. Se realizó un análisis de modelos lineales generalizados (GLM) para determinar los síntomas y signos más frecuentes asociados a la COVID-19. Los signos y síntomas clínicos asociados a COVID-19 en el análisis bivariado fueron disgeusia, odinofagia, anosmia, artralgia, mialgia, conjuntivitis y edad mayor de 40 años. En el modelo multivariado final solo la edad mayor de 40 años (OR) 2,2; IC 95 % 1,3,3,8) y la disgeusia (OR 2,1; IC95 % 1,2,3,6) mantuvieron significanca estadística. Disgeusia, odinofagia, anosmia, artralgias, mialgias y conjuntivitis son signos y síntomas clínicos que pueden aparecer en etapas tempranas de la enfermedad, por lo que podrían ser importantes para un diagnóstico precoz.

Diagnóstico clínico y por imagen de rodilla de Charcot por neuroartropatía diabética

RESUMEN Introducción: La neuroartropatía es una afección secundaria a enfermedades metabólicas, infecciosas o genéticas. Su localización usual está reportada en el pie, pero puede afectar cualquier articulación, compromete su estado vascular y modifica la condición ósea, genera fracturas, contracturas y luxaciones. Objetivos: Reportar los hallazgos clínicos e imagenológicos de una paciente con neuroartropatía de Charcot por diabetes mellitus, en una localización articular, poco frecuente. Caso Clínico: Paciente femenina de 62 años, procedente del suroccidente colombiano, con antecedentes de diabetes mellitus y complicaciones micro y macrovasculares. Presentó un cuadro clínico de dolor articular en la rodilla derecha, que evolucionó a una imposibilidad para la marcha. En su atención se realizaron diferentes estudios de imagen; se encontró una fractura del cóndilo femoral izquierdo y de los platillos tibiales. Estas características radiológicas típicas, más los cambios clínicos de la articulación, llevaron al diagnóstico de rodilla de Charcot. Se realizaron intervenciones farmacológicas analgésicas, además de inmovilización articular, con adecuada evolución en el seguimiento clínico. Conclusiones: La neuroartropatía con rodilla de Charcot es una afección que debe ser evaluada en todos los pacientes con diabetes mellitus y otras enfermedades, ampliar el panorama de revisión articular a localizaciones menos frecuentes, como la rodilla. Una intervención temprana y multidisciplinaria puede favorecer los desenlaces clínicos positivos.

ABSTRACT Introduction: Neuroarthropathy is a condition secondary to metabolic, infectious, or genetic diseases. Its usual localization is reported in the foot, but it can affect any joint, compromising its vascular status and modifying the bone condition generating fractures, contractures, and dislocations. Objectives: To report the clinical and imaging findings of a patient with Charcot neuroarthropathy due to diabetes mellitus in a rare joint location. Clinical Case: A 62-year-old woman from Colombian southwestern, with a history of diabetes mellitus, in addition to micro and macrovascular complications. She presented a clinical picture of joint pain in the right knee that evolved to an inability to walk. During her care, different imaging tests were performed, finding a fracture of the left femoral condyle and tibial plateau, these typical radiological characteristics plus the clinical changes of the joint, led to the diagnosis of Charcot's knee. Pharmacological interventions were performed in pain in addition to joint immobilization, with adequate evolution in clinical follow-up. Conclusions: Neuroarthropathy is a condition that should be evaluated in all patients with diabetes mellitus and other conditions, expanding the joint revision panorama to less frequent locations such as the knee; early and multidisciplinary intervention can favor positive clinical outcomes.

Diagnosis and treatment of articular manifestations of systemic lupus erythematosus / Diagnóstico y tratamiento de las manifestaciones articulares del lupus eritematoso sistémico

ABSTRACT Articular involvement in Systemic Lupus Erythematosus (SLE) is well recognized as one of the most common manifestations of the disease. This article reviews the recent knowledge of the clinical manifestations, diagnostic techniques and therapies used for the treatment of joint involvement in SLE. The degree of articular involvement is characterized by widespread heterogeneity in terms of clinical presentation and severity. It may range from minor arthralgia without erosions or deformity to erosive arthropathy and severe functional disability. Inflammatory musculoskeletal manifestations are described as a major cause of pain impacting daily activities and as a major determinant of quality-of-life impairment. Thus, physicians must be aware of articular involvement in SLE. Lupus arthritis diagnosis may be challenging, due to the frequently mild synovitis. The introduction of new more sensitive imaging techniques, such as ultrasound, and MRI have contributed significantly to improving the diagnosis of osteoarticular involvement in SLE. There are several treatment options for the management of joint manifestations in patients with SLE. The choice of treatment will depend on the type and pattern of joint involvement, its severity, and the characteristics of the patient.

RESUMEN El compromiso articular en lupus eritematoso sistémico (LES) es bien reconocido como una de las manifestaciones más comunes de la enfermedad. En el presente artículo se revisa la evidencia reciente sobre las manifestaciones clínicas, las técnicas de diagnóstico y los tratamientos utilizados para tratar el compromiso articular en el LES. El grado de compromiso articular se caracteriza por la amplia heterogeneidad en su presentación clínica y su gravedad. Puede variar desde artralgia leve sin erosiones o deformidad, hasta una artropatía erosiva y discapacidad funcional. Se describen las manifestaciones inflamatorias musculoesqueléticas como la principal causa de dolor que afecta las actividades de la vida cotidiana y como uno de los principales factores determinantes del deterioro de la calidad de vida. Por lo tanto, los médicos deben estar conscientes del compromiso articular en LES. El diagnóstico de la artritis lúpica puede ser difícil debido a la sinovitis, usualmente leve. El advenimiento de nuevas técnicas de imágenes más sensibles, como la ecografía y la resonancia magnética, ha contribuido significativamente a mejorar el diagnóstico del compromiso osteoarticular en LES. Existen varias opciones de tratamiento para las manifestaciones articulares en pacientes con LES. La opción de tratamiento dependerá del tipo y del patrón del compromiso articular, así como de las características del paciente.

Enfrentamiento del paciente con poliartralgias y poliartritis / Patient's facing polyarthralgia and polyarthritis

El dolor articular es un motivo de consulta frecuente en la práctica clínica. La distinción del tipo de dolor, su distribución, los síntomas acompañantes, el examen físico y la evaluación de algunos exámenes de laboratorio ayudan a orientar acerca de las posibles causas y a pesquisar enfermedades graves que pueden causar destrucción articular o compromiso de otros órganos, con el fin de dar tratamiento oportuno y eficaz. En este artículo se dan algunas pautas que se pueden realizar en la consulta de Atención Primaria para distinguir cuadros de poliartralgias y poliartritis agudas y crónicas. Además, se dan nociones de algunas de las enfermedades reumatológicas más frecuentes.

Joint pain is a frequent reason for consultation in clinical practice. The distinction of the type of pain, its distribution, the accompanying symptoms, the physical examination and the evaluation of some laboratory test help to guide about the possible causes and to investigate serious diseases that can cause joint destruction or involvement other organs, in order to provide timely and effective treatment. This article gives some guidelines that can be carried out in the Primary Care consultation to distinguish acute and chronic polyarthralgia and polyarthritis. In addition, notions of some of the most frequent rheumatological diseases are given.

Epidemiology of hip pain in brazilian bodybuilders / Epidemiologia da dor no quadril em fisiculturistas brasileiros

ABSTRACT Objective: To determine the frequency of hip pain in competitive bodybuilders over three different bodybuilding competitions. Methods: This study evaluated bodybuilders recruited from three competitions during the year of 2016. All participants provided their informed consent and the study received IRB approval. Training routine, health condition, level of success on competitions, history of hip pain and physical examination of the hip were evaluated. Results: 113 bodybuilders were evaluated, mean age was 30.5 ± 8.65 years and mean BMI was 25.2 ± 3.65 kg/m2. Mean values for hip flexion, adduction, abduction, internal rotation, external rotation and distance between the knee and the table (FABER distance) were 116 ± 13, 23 ± 8, 71 ± 12, 40 ± 10, 36 ± 9 and 19 ± 4, respectively. Eight (7%) participants presented hip pain within the week prior to examination and only 2 (1,7%) presented with anterior impingement sign. None of the athletes who reported hip pain interrupted their physical training or performance. Conclusion: Symptomatic athletes continued their training program under the presence of hip pain. The frequency of hip pain among bodybuilders is high and may be underestimated in this study. Level of Evidence IV, Case series.

RESUMO Objetivo: Determinar a frequência de dor no quadril em atletas fisiculturistas durante três competições de fisiculturismo. Métodos: Este estudo avaliou fisiculturistas recrutados em três competições de fisiculturismo durante o ano de 2016. Termo de consentimento foi obtido de todos os participantes, e também foi obtido a aprovação do CEP. Rotina de treinos, condição de saúde, nível de sucesso nas competições, antecedente de dor no quadril ao exame físico foram avaliados. Resultados: Um total de 113 fisiculturistas foram avaliados, com idade e IMC médio de 30.5 ± 8.65 anos e 25.2 ± 3.65 kg/m2, respectivamente. O valor médio de flexão, adução, abdução, rotação interna, rotação externa do quadril, e distância entre o joelho e a mesa de exame (distância FABERE) foi de 116 ± 13, 23 ± 8, 71 ± 12, 40 ± 10, 36 ± 9 e 19 ± 4, respectivamente. Oito (7%) participantes apresentavam dor no quadril dentro da última semana antes de serem examinados, e apenas dois (1.7%) apresentavam sinal do impacto anterior do quadril à manobra de flexão adução e rotação interna. A dor no quadril não afetou o treinamento físico e a performance dos atletas que reportaram dor no quadril. Conclusão: Atletas sintomáticos continuaram o programa de treinamento mesmo na presença de dor no quadril. A frequência de dor no quadril de atletas fisiculturistas é alta e pode ter sido subestimada neste estudo. Nível de Evidência IV, Série de casos.

Perfil das manifestações musculoesqueléticas em esclerose sistêmica e associação com fator reumatoide / Profile of musculoskeletal manifestations in systemic sclerosis and association with rheumatoid factor

A esclerose sistêmica (ES) é doença sistêmica crônica e autoimune. Estima-se que dor musculoesquelética esteja presente entre 40-80% dos pacientes, sobretudo naqueles com doença difusa precoce. O objetivo deste trabalho foi estudar a prevalência de manifestações musculoesqueléticas em ES, verificar se sua presença altera o perfil clínico, qual a prevalência de fator reumatoide na ES e sua associação com manifestações musculoesqueléticas. É estudo retrospectivo envolvendo 48 pacientes com ES. Foram coletados dados sobre epidemiologia, manifestações clínicas e exames laboratoriais Coletou-se também o valor do HAQ. Em conclusão, manifestações articulares da ES estão associadas com pior funcionalidade e a miosite aparece nos mais jovens. Um quarto dos pacientes é positivo para fator reumatoide, mas ele não se associa com as manifestações musculoesqueléticas.

Systemic sclerosis (SSc) is a chronic and autoimmune systemic disease. It is estimated that musculoskeletal pain is present in 40-80% of patients, especially those with early diffuse disease. The objective of this work was to study the prevalence of musculoskeletal manifestations in SSc, verify if its presence alters the clinical profile, the prevalence of rheumatoid factor in SSc and its association with musculoskeletal manifestations. It is a retrospective study involving 48 patients with SSc. Data on epidemiology, clinical manifestations and laboratory tests were collected. The HAQ value was also collected. In conclusion, joint manifestations of SSc are associated with worse functionality and myositis appears in the youngest. A quarter of patients are positive for rheumatoid factor but it is not associated with musculoskeletal manifestations.

Disfunção da mão em esclerodermia / Hand dysfunction in scleroderma

A esclerodermia cursa com espessamento importante da pele, o qual pode afetar a mobilidade e função das mãos. O objetivo deste estudo foi avaliar o acometimento das mãos em pacientes com esclerodermia sistêmica. É estudo transversal de 43 pacientes com esclerodermia para dados clínicos e epidemiológicos, presença de STC (síndrome de túnel do carpo), força da mão medida pelo dinamômetro Jamar®, e função da mão pelos questionários de Hamis e Cochin. Estes pacientes foram comparados com 43 controles. Em conclusão, pacientes de esclerodermia têm pior função da mão do que controles. A presença de queixas musculoesqueléticas afeta destreza e força da mão, enquanto que a presença de STC influencia na presença de parestesias. O grau de envolvimento cutâneo e a forma da esclerodermia não modificaram a função da mão.

Scleroderma progresses with significant thickening of the skin, which can affect the mobility and function of the hands. The aim of this study was to evaluate the involvement of the hands in patients with systemic scleroderma. It is a cross-sectional study of 43 patients with scleroderma for clinical and epidemiological data, presence of CTS (carpal tunnel syndrome), hand strength measured by the Jamar® dynamometer, and hand function by the Hamis and Cochin questionnaires. These patients were compared with 43 controls. In conclusion, scleroderma patients have worse hand function than controls. The presence of musculoskeletal complaints affects dexterity and hand strength, while the presence of CTS influences the presence of paresthesias. The degree of skin involvement and the form of scleroderma did not change hand function.

Adult onset still's disease (aosd): a rare condition with a classic clinical presentation. case report

ABSTRACT Introduction: Adult Onset Still's Disease (AOSD) is a rare systemic inflammatory disease of unclear etiology, with low incidence and prevalence among the general population. AOSD is a common cause of fever of unknown origin (FUO) in up to 20% of cases. Due to the scarce knowledge about this disease and its diagnosis, it is usually unrecognized in the differential diagnoses, worsening the prognosis and increasing complications in some patients. Case presentation: This is the case of a 32-year-old female patient with prolonged febrile illness, who did not respond to the antimicrobial treatments previously established. She was diagnosed with AOSD according to the Yamaguchi criteria after an extensive exclusion process. She was treated with first-line treatment with corticosteroids, achieving satisfactory results Conclusions: The diagnosis of AOSD is an exhaustive process. Regardless of the availability of cutting-edge diagnostic tools, the medical history of the patient and an adequate physical examination are the most important aspects to consider.

RESUMEN Introducción. La enfermedad de Still del adulto (ESA) es una enfermedad inflamatoria sistémica de baja incidencia y prevalencia en población general y cuya etiología aún no es clara. La ESA puede causar fiebre de origen desconocido hasta en el 20% de los casos, pero suele pasar inadvertida dentro de los diagnósticos diferenciales iniciales debido a su desconocimiento, lo que empeora el pronóstico y aumenta las complicaciones en los pacientes. Presentación del caso. Paciente femenina de 32 años con síndrome febril prolongado que no respondía a tratamientos antimicrobianos instaurados previamente y en quien, finalmente, se diagnosticó ESA aplicando los criterios clasificatorios de Yamaguchi. La mujer recibió tratamiento de primera línea con corticosteroides y obtuvo buenos resultados. Conclusiones. La ESA requiere un exhaustivo proceso para su diagnóstico, en el cual, a pesar de la disponibilidad de herramientas diagnósticas avanzadas, la verificación de la historia clínica y la realización de un adecuado examen físico son los aspectos más importantes a tener en cuenta.

Importancia de las características clínicas y de laboratorio en el diagnóstico de las infecciones concomitantes por dengue y chikungunya: reporte de un caso probable / Importance of clinical and laboratory characteristics in the diagnosis of dengue and chikungunya co-infection: Probable case report

Se presenta el caso de una mujer de 38 años que consultó inicialmente por fiebre indiferenciada. A pesar de que el cuadro clínico evolucionó con manifestaciones clínicas de dengue con signos de alarma y de que la detección de IgM antidengue en una sola muestra indicaba que se trataba de un caso probable que había podido ocurrir durante los tres meses anteriores, la paciente consultó de forma reiterada, pues no presentaba una mejoría significativa. En el décimo día del inicio de los síntomas, se observó edema simétrico en múltiples articulaciones acompañado de dolor, así como lesiones hiperpigmentadas en el surco nasogeniano. Se confirmó el diagnóstico de chikungunya por la presencia de anticuerpos IgM. Aunque puede pasar desapercibida, en los países endémicos para dengue y chikungunya existe la posibilidad de la infección concomitante, la cual puede agravar la evolución clínica de cada una de estas enfermedades. Por ello, es necesario que el médico considere las características clínicas y de laboratorio de ambas enfermedades para diagnosticar su presencia simultánea, garantizar un manejo adecuado y minimizar las complicaciones.

We report the case of a 38-year-old woman who initially consulted for an undifferentiated fever. Although her clinical condition evolved with signs and symptoms compatible with dengue with alarm signs and that the anti-dengue IgM detection in a single sample indicated it was a probable case that could have happened during the previous three months, the patient kept consulting due to little improvement. On the tenth day after the onset of symptoms, she presented with painful polyarticular symmetric edema, as well as hyperpigmented lesions in the nasolabial fold. Chikungunya diagnosis was confirmed by the presence of IgM antibodies. In endemic countries for dengue and chikungunya, the possibility of co-infection exists, but it may go unnoticed. On the other hand, the co-infection may worsen the clinical course of these diseases. Therefore, physicians should evaluate the clinical and laboratory characteristics of both infections to be able to diagnose the coinfection for adequate management and to minimize complications.

Relationship between symptoms and imagenological signs of degenerative temporomandibular joint disorders using the Research Diagnostic Criteria for Temporomandibular Disorders and cone-beam computed tomography / Relação entre sintomas e sinais imagenológicos das disfunções degenerativas da articulação temporomandibular com o Research Diagnostic Criteria for Temporomandibular Disorders e a tomografia computadorizada de feixe cônico

ABSTRACT BAKGROUND AND OBJECTIVES: Arthralgia is a common complaint among patients with temporomandibular osteodegeneration, however, for the accurate diagnosis of osteodegeneration, it is suggested the adoption of imaging tests associated with standardized clinical diagnosis protocols. The objective of this study was to evaluate patients with degenerative changes in the temporomandibular joint previously visualized by cone beam computed tomography, relating these changes with the clinical diagnoses and symptoms of temporomandibular disorders, in order to conclude which of the degenerative changes develop more painful symptomatology. METHODS: A cross-sectional observational descriptive study. Thirty-eight patients who had previously done the cone beam computed tomography exam were evaluated. Subjects were grouped according to clinical diagnosis of temporomandibular joint changes using the Research Diagnostic Criteria for Temporomandibular Disorders questionnaire. The presence of pain was considered during lateral palpation; intra-articular palpation; excursive movements; and active mouth opening. RESULTS: Among the purely clinical diagnoses, only 10.5% were conclusive, classifying patients as suffering from osteoarthritis/osteoarthrosis. Painful joint symptoms were found in all groups, with no statistically significant difference. Similarly, the presence of degenerative disorders, including flattening, osteophytes, sclerosis, and erosion were found in similar proportions in all diagnosis groups. CONCLUSION: 89.5% of the degenerative changes were clinically underdiagnosed. There was a positive association between the presence of symptoms and the number of correct clinical diagnoses of osteoarthritis/osteoarthrosis obtained with the Research Diagnostic Criteria for Temporomandibular Disorders.

RESUMO JUSTIFICATIVA E OBJETIVOS: Entre os pacientes com osteodegeneração cortical temporomandibular, a artralgia é uma queixa comum, entretanto, para o diagnóstico preciso de osteodegeneração sugere-se a adoção de exames de imagem associados a protocolos de diagnóstico clínico padronizados. O objetivo deste estudo foi avaliar pacientes com alterações degenerativas da articulação temporomandibular previamente visualizados por tomografia computadorizada de feixe cônico, relacionando essas alterações com os diagnósticos e sintomas clínicos da disfunção temporomandibular, a fim de concluir quais das alterações degenerativas se associam ao sintoma álgico. MÉTODOS: Trata-se de um estudo observacional descritivo transversal. Foram avaliados 38 pacientes que já haviam realizado realizado a tomografia computadorizada de feixe cônico. Os indivíduos foram agrupados de acordo com o diagnóstico clínico de alterações na articulação temporomandibular, utilizando o questionário Research Diagnostic Criteria for Temporomandibular Disorders. A presença de dor foi considerada durante: palpação lateral; palpação intra-articular; movimentos excursivos; e abertura ativa da boca. RESULTADOS: Entre os diagnósticos puramente clínicos, apenas 10,5% foram conclusivos, classificando os pacientes como portadores de osteoartrite/osteoartrose. Sintomas articulares dolorosos foram encontrados em todos os grupos, sem diferença estatisticamente significante. Da mesma forma, a presença de distúrbios degenerativos, incluindo achatamento, osteófitos, esclerose e erosão, foi encontrada em proporções semelhantes em todos os grupos de diagnóstico. CONCLUSÃO: 89,5% das alterações degenerativas foram clinicamente subdiagnosticadas. Houve associação positiva entre a presença de sintomas e o número de diagnósticos clínicos corretos de osteoartrite/osteoartrose obtidos com o Research Diagnostic Criteria for Temporomandibular Disorders.

Síntomas subagudos y crónicos de la fiebre de chikungunya en un grupo de personas adultas en Ibagué, Colombia / Subacute and chronic symptoms of chikungunya fever in a group of adults in Colombia

Resumen Introducción. La fiebre de chikungunya en Colombia ocasiona una alerta en salud pública que se extiende en el tiempo, dadas las características subagudas y crónicas de la enfermedad. Objetivo. Describir los síntomas subagudos y crónicos en personas mayores de 18 años con fiebre de chikungunya en Ibagué, Colombia. Materiales y métodos. Se hizo un estudio descriptivo con muestreo en bola de nieve de 368 adultos de todas las comunas de Ibagué que presentaban síntomas de la fiebre de chikungunya de más de 12 días de duración. Resultados. Las articulaciones que presentaban dolor en la fase subaguda y crónica de la enfermedad fueron las de manos (84,2 %), rodillas (72,8 %) y tobillos (69,3 %); además de las articulaciones, la planta de los pies fue el sitio en que más frecuentemente se presentó dolor (48,8 %). El dolor articular en manos (p=0,017) y tobillos (p=0,001) y el dolor en la planta de los pies (p=0,002) fueron significativos en las mujeres. La fatiga o el cansancio generalizado se presentaron en el 58,9 % de las personas y se prolongó por más de un año en el 2,4 % de ellas. Conclusiones. Los síntomas de la fase subaguda y crónica de la fiebre de chikungunya coincidieron con los descritos en la literatura médica, su duración se extendió hasta por un año o más en algunos de los casos y su intensidad disminuyó con el tiempo. Los síntomas referidos fueron más comunes en las mujeres que en los hombres.

Abstract Introduction: In Colombia, chikungunya fever creates a warning in public health that extends over time given the subacute and chronic characteristics of the disease. Objective: To describe subacute and chronic symptoms in adult people who suffered chikungunya fever in the city of Ibagué, Colombia. Materials and methods: We conducted a descriptive study with snowball sampling in 368 adults from all the communes of Ibagué, Colombia, who had symptoms of chikungunya fever spanning for more than 12 days. Results: The joints that showed the greatest pain in the subacute and chronic phase of the disease were the hands with 84.2%, knees with 72.8%, and ankles with 69.3%. The soles of the feet were the non-articular areas with greater frequency of pain (48.8%). Joint pain in the hands (p=0.017) and ankles (p=0.001) and pain in the soles of the feet (p=0.002) were significant in women. General fatigue occurred in 58.9% of the subjects and in 2.4% of the population, it lasted for more than a year. Conclusions: The symptoms of the subacute and chronic phase of chikungunya fever were the same reported in the literature, they lasted up to a year or more, and decreased in intensity over time. The referred symptoms were more common in women than in men.

Evaluation of the ischiofemoral space: a case-control study / Avaliação do espaço isquiofemoral: um estudo caso-controle

Abstract Objective: To determine the size of the ischiofemoral space (IFS) and quadratus femoris space (QFS) in patients with and without ischiofemoral impingement (IFI). Materials and Methods: Case-control study including consecutive patients submitted to magnetic resonance imaging (MRI) of the hip joint during a three-month period. Patients with deep gluteal pain who tested positive for IFI on at least one clinical test and showed signal changes in the quadratus femoris muscle on MRI were categorized as having a confirmed diagnosis of IFI. Results: Final sample comprised 50 patients submitted to unilateral MRI of the hip joint. The mean age was 47.3 ± 14.0 years (range, 22-76 years), and 33 (66%) of the patients were women. A diagnosis of IFI was made in 6 patients (12%), all of whom were female. On average, IFS and QFS were significantly smaller in IFI group than in control group (11.1 ± 2.7 mm versus 27.5 ± 6.5 mm and 5.3 ± 1.8 mm versus 18.8 ± 4.8 mm, respectively; p < 0.001 for both). Conclusion: Results of specific clinical tests and MRI findings indicate that the IFS and QFS are significantly reduced in patients with IFI.

Resumo Objetivo: Avaliar, prospectivamente, os valores médios dos espaços isquiofemoral e quadrado femoral em pacientes com impacto isquiofemoral e em um grupo controle. Materiais e Métodos: Estudo prospectivo incluindo pacientes submetidos a ressonância magnética da articulação do quadril em um intervalo de três meses. Os pacientes com dor glútea profunda, com pelo menos um teste clínico positivo para impacto isquiofemoral e alterações de sinal no músculo quadrado femoral na ressonância magnética, foram diagnosticados com impacto isquiofemoral. Resultados: A amostra final consistiu de 50 pacientes submetidos a ressonância magnética unilateral da articulação do quadril. A idade média foi 47,3 ± 14,0 anos (intervalo de 22 a 76 anos) e 33 (66%) eram mulheres. O diagnóstico de impacto isquiofemoral foi observado em 6 (12%) pacientes, todas mulheres. Os pacientes com impacto isquiofemoral mostraram redução significativa nos espaços isquiofemoral e quadrado femoral quando comparados ao grupo controle: 11,1 ± 2,7 mm versus 27,5 ± 6,5 mm e 5,3 ± 1,8 mm versus 18,8 ± 4,8 mm, respectivamente (p < 0,001 para ambos os grupos). Conclusão: Os pacientes com diagnóstico de impacto isquiofemoral apresentaram redução significativa dos espaços isquiofemoral e quadrado femoral após análise prospectiva baseada em testes clínicos específicos e ressonância magnética.

Qué pensar antes de decir que el paciente tiene un diagnóstico psiquiátrico. Parte I / What do you think before that you said: the patient has a psychiatric diagnosis. Part I

Resumen Los pacientes refieren sus síntomas en una gran variedad de términos como: "estoy cansado", "me duelen las articulaciones", "me pica todo el cuerpo", "tengo la boca seca", entre otros. Ante estos síntomas el médico piensa de manera automática en un número limitado de patologías que le son familiares, pero existen muchas otras causas a estos síntomas que no se tienen en cuenta. El desconocimiento del médico hace que en el paciente se genere inconformidad al no tenerse un diagnóstico correcto y un tratamiento adecuado, esto lleva a múltiples consultas y que el médico llegue a preguntarse a sí mismo "¿será que este paciente tiene un diagnóstico psiquiátrico?". En este artículo se enumeran las causas frecuentes de estos síntomas mencionados, se describen causas que son pocas veces sospechadas y las claves clínicas para que el médico pueda hacer el diagnóstico de éstas. La primera parte desarrollará los síntomas: fatiga, parestesias, prurito, artralgias, ansiedad y cambios en el comportamiento. La segunda parte desarrollará los síntomas: intolerancia a los alimentos, xerostomía, síncope, disfagia y manifestaciones en pacientes con cirugía bariátrica.

Abstract Patients refer their symptoms in a variety of terms such as: "I am tired", "my joints hurt", "my body itches", "my mouth is dry", among others. Given these symptoms, the doctor automatically thinks in a limited number of pathologies that are familiar to him, but there are many other causes to these symptoms that are not taken into account. The lack of knowledge of the doctor causes the patient to be dissatisfied by not having a correct diagnosis and adequate treatment, this leads to multiple visits and the doctor comes to ask himself "will this patient have a psychiatric diagnosis?". This article lists the frequent causes of these symptoms, describes causes that are rarely suspected and the clinical keys for the doctor to diagnose them. The first part will address the symptoms: fatigue, paresthesia, pruritus, arthralgia, anxiety and changes in behavior. The second part will develop the symptoms: intolerance to food, xerostomia, syncope, dysphagia and manifestations in patients with bariatric surgery.

Artropatía relacionada con hepatitis C / Hepatitis C-related arthropathy

Resumen: OBJETIVO: Reportar una serie de casos de artropatía relacionada con hepatitis C. MATERIAL Y MÉTODO: Estudio retrospectivo en el que de enero de 2015 a diciembre de 2017 se incluyeron pacientes con infección crónica por VHC y artropatía referidos a la consulta de reumatología. Se examinaron de manera retrospectiva factores de riesgo, factor reumatoide (FR), anticuerpo contra péptido cíclico citrulinado (anti-PCC), anticuerpos contra VHC, genotipo viral y enzimas. También se determinó la subclase de artropatía, existencia de erosiones y tratamiento. Se excluyeron los pacientes infectados con VHB. RESULTADOS: Se incluyeron 31 pacientes. Los factores de riesgo de infección por VHC se identificaron solamente en 28 casos, que incluyen transfusión sanguínea antes de 1992 (n = 12) o abuso de drogas intravenosas (n = 16). En seis casos coexistieron artritis reumatoide y VHC; todos fueron seropositivos a factor reumatoide y anti-PCC y tres casos mostraron erosiones. Nueve casos tuvieron poliartritis simétrica u oligoartritis no erosiva que semejaba artritis reumatoide y 16 casos tuvieron artralgias simples. En total, el factor reumatoide fue positivo en 77% y las enzimas estuvieron altas en seis casos. La combinación de sulfasalazina, cloroquina y prednisona a dosis bajas y antiinflamatorios fue comúnmente indicada. CONCLUSIÓN: Los pacientes con infección por VHC pueden padecer artralgias-artritis. El tipo de artropatía debe diferenciarse por la hepatotoxicidad de los fármacos modificadores de enfermedad. El anti-PCC es útil para distinguir artropatía relacionada con hepatitis C de artritis reumatoide.

Abstract: OBJECTIVE: To report a case series of HCV-related arthropathy. MATERIAL AND METHOD: A retrospective study was done from January 2015 to December 2017 with patients with chronic HCV infection and arthropathy referred to our rheumatology clinic. All the patients were retrospectively reviewed. Risk factors for HCV infection including blood transfusion or intravenous drug abuse, rheumatoid factor (RF), anti-cyclic citrullinated peptide antibody (anti-CCP), anti-HCV (ELISA), viral genotype, and enzymes levels were examined. The clinical presentation of joint involvement, erosions, and type of treatment were also studied. Patients seropositive to HBV were excluded. RESULTS: There were included 31 patients. Risk factors were identified in only 28 cases, including blood transfusion (12) before 1992 and intravenous drug abuse (16). Rheumatoid arthritis coexisting with hepatitis C was found in 6 cases; all of these had anti-CCP, RF and erosions in 3. Nine patients gave a history of mild, symmetric poliar- thritis or oligoarthritis no-erosive resembling classic rheumatoid arthritis. Sixteen patients presented polyarthralgias. In total, RF was present in 77% out of 31 patients. Elevated enzymes were seen in 6 cases. Sulphasalazine, chloroquine, low dose prednisone and NSAIDs were commonly prescribed. CONCLUSION: The patients with HCV infection can present arthralgias/arthritis. The type of arthropathy must be differentiated due to the hepatotoxicity of disease modifying drugs. Anti-PCC antibody is useful for distinguishing HCV-related arthropathy from rheumatoid arthritis.

Chikungunya Virus Infection-associated Arthralgia in Adult Jamaicans Post-outbreak / Artralgia asociada con la infección del virus de Chikunguña en jamaicanos adultos con posterioridad al brote

ABSTRACT Objective: To report demographic and self-reported clinical characteristics associated with persistent and severe arthralgia 8-12 months post-chikungunya virus (CHIKV) infection. Methods: A cross-sectional study of 306 adults who self-reported CHIKV infection was conducted. Subjects were consecutively enrolled at public primary healthcare centres in urban and rural areas in Jamaica. Adults with arthralgic conditions were compared with those who reported no arthralgia. Binary logistic regression models were used to determine demographic and self-reported clinical factors associated with severe arthralgia and persistent arthralgia. Results: Most subjects (70.3%) reported arthralgia after CHIKV outbreak (age: 47.6 ± 18.5 years). Medical consultation (36.2%) and laboratory confirmation (1.4%) were low. The prevalence of persistent and severe arthralgia in the previous month was 30.3% and 27.5%, respectively. Severe arthralgia was associated with the female gender (odds ratio (OR): 2.44; 95% confidence level (CI): 1.08, 5.52) and pre-existing arthritis (OR: 3.78; 95% CI: 1.23, 11.62). Females showed a greater likelihood of persistent arthralgia (OR: 2.18; 95% CI: 1.09, 4.39). Conclusion: Self-perceived arthralgia was an important feature 8-12 months post-CHIKV infection and has implications for the recognition and management of arthritis/rheumatic conditions.

RESUMEN Objetivo: Reportar las características clínicas demográficas y auto-reportadas asociadas con una artralgia persistente y severa de 8-12 meses tras la infección del virus de chikunguña (CHIKV). Métodos: Se llevó a cabo un estudio transversal de 306 adultos que auto-reportaron su infección de CHIKV. Los sujetos fueron alistados consecutivamente en centros públicos de atención primaria en zonas urbanas y rurales de Jamaica. Los adultos con condiciones artrálgicas fueron comparados con adultos que no reportaron artralgia alguna. Los modelos de regresión logística binaria fueron utilizados para determinar los factores clínicos demográficos y auto-reportados que se asocian con artralgia severa y artralgia persistente. Resultados: La mayoría de los sujetos (70.3%) reportaron artralgia después del brote de CHIKV (edad: 47.6 ± 18.5 años). La consulta médica (36.2%) y la confirmación del laboratorio (1.4%) fueron bajas. La prevalencia de la artralgia persistente y la severa en el mes anterior fue de 30.3%y 27.5%, respectivamente. La artralgia severa estuvo asociada al género femenino (odds-ratio (OR): 2.44; intervalo de confianza (IC): 1.08, 5.52), y artritis preexistente (OR: 3.78; 95% (IC: 1.23, 11.62). Las hembras mostraron una mayor probabilidad de artralgia persistente (OR: 2.18; 95% IC: 1.09, 4.39). Conclusión: La artralgia auto-percibida fue una característica importante de la infección post-CHIKV de 8-12 meses, y tiene implicaciones para el reconocimiento y tratamiento de la artritis y las condiciones reumáticas.

Chikungunya, enfermedad emergente en América Latina. Descripción de los primeros casos en Chile / Chikungunya, emerging disease in Latin America. Description of the first cases in Chile

Resumen Introducción: Chikungunya (CHIK) se introduce en América el año 2013 diseminándose rápidamente. En 2014, se diagnosticó el primer caso importado en Chile. Objetivos: Identificar pacientes con sospecha clínica de CHIK. Describir sus características clínicas y laboratorio. Pacientes y Métodos: Se enrolaron pacientes con sospecha de CHIK. Se confirmó mediante reacción de polimerasa en cadena (RPC), IgM o IgG CHIKV. Se aplicó encuesta con preguntas demográficas, características del viaje, manifestaciones clínicas y laboratorio a pacientes y médicos tratantes. Resultados: Se enrolaron 21 pacientes, confirmando CHIK en 16 que se analizaron; 12 mujeres (75%), promedio edad 39 años (27-52). Exposición más frecuente fue el Caribe y Sudamérica. El síntoma inicial fue artralgia en 63%. Los síntomas más frecuentes fueron mialgias y malestar general (100%), fiebre y poliartralgia (94%). La mediana de duración de artralgias 90 días (3-262 días) y en 53% > 3 meses. Las articulaciones más comprometidas fueron tobillos, manos y muñecas, 87% con dolor invalidante. La artritis duró más en hombres que en mujeres (p < 0,001). El 38% de pacientes presentó linfopenia y un paciente trombocitopenia leve. Hubo dos hospitalizaciones por cefalea y pielonefritis aguda. Conclusiones: Chikungunya debe sospecharse en viajeros que regresan febriles y con poliartralgias intensas. Medidas de prevención deben ser indicadas a viajeros a zonas de riesgo.

Background: Chikungunya (CHIK) was introduced in The Americas in 2013, spreading rapidly. In 2014, the first imported case was diagnosed in Chile. Aim: To identify patients with clinical suspicion of CHIK and describe their clinical and laboratory characteristics. Patients and Methods: Patients with suspected CHIK were enrolled. All were confirmed by PCR, IgM or IgG CHIK. A structured survey was applied, which included demographic questions, travel characteristics, clinical manifestations, and laboratory results. Results: 21 patients were enrolled and CHIK was confirmed in 16, who were further analyzed; 12 were female (75%), average age 39 years (27-52). The Caribbean and South Americawere the most frequent sites of exposure. In 63%, the initial symptom was arthralgia. Most frequent symptoms were myalgias, malaise (both 100%), fever, and polyarthralgia (both 94%). The median duration of arthralgias was 90 days (3-262); in 53% arthralgias lasted ≥ 3 months. Main joints involved were ankles, hands, and wrists; 87% reported invalidating pain. Arthritis lasted longer in men than in women (p < 0.001). 38% of patients presented lymphopenia and one patient mild thrombocytopenia. Two patients required hospitalization, one with severe headaches, the other with acute pyelonephritis. Conclusions: Chikungunya should be suspected in returning travelers presenting with fever and severe polyarthralgia. Travelers to endemic areas should apply prevention measures to avoid mosquito bites.