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ABSTRACT Introduction Viscosupplementation and strength training are proposed interventions in the treatment of knee osteoarthritis. Objective To describe the isokinetic response in women with knee osteoarthritis who underwent both interventions. Methods A double-blind, randomized clinical trial involving thirty women diagnosed with grade II and III bilateral knee osteoarthritis using the radiological criteria of Kellgren & Lawrence. The subjects were randomized into three groups of ten patients each: one group was submitted to viscosupplementation and strength training (VST), another was submitted to strength training (ST) only, and a third to viscosupplementation (VS) only. All evaluations followed the study phases defined as pre-procedure (PRE); after 48 hours of VS (POS-VS); after 12 weeks of training (POS T); and after eight weeks of detraining (POS D). Intra-articular knee infiltrations were performed with a single dose of Hylan GF-20 and isokinetic dynamometry to determine the maximum torque in knee extension and flexion. Pain was measured by the visual analogue scale (VAS). Results The interventions promoted improvements in the isokinetic response in all three groups and in both muscle groups, with advantage for the extensor group. A significant difference was noticed in the isokinetic response of the trained groups when compared only to the viscosupplemented group (p<0.005), and the VST group showed better isokinetic response compared to the ST group. Conclusion Combined treatment with viscosupplementation and strength training, and treatment with strength training only, presented better results in terms of isokinetic response and pain reduction than viscosupplementation alone. Level of evidence I; Therapeutic studies-Investigating the results of treatment.
RESUMO Introdução Viscossuplementação e treinamento de força são intervenções propostas no tratamento da osteoartrite de joelho. Objetivo Descrever a resposta isocinética em mulheres com osteoartrite de joelho submetidas a ambas intervenções. Métodos Ensaio clínico duplo-cego e randomizado envolvendo 30 mulheres com diagnóstico de osteoartrite bilateral de joelho de graus II e III utilizando os critérios radiológicos de Kellgren & Lawrence. Elas foram randomizadas em três grupos de dez pacientes cada: um grupo foi submetido à viscossuplementação e ao treinamento de força (VTF), o outro submetido ao treinamento de força (TF) e o terceiro grupo foi submetido apenas à viscossuplementação (VS). Todas as avaliações seguiram as fases do estudo definidas como pré-procedimento (PRE); após 48 horas da VS (POS-VS); após 12 semanas de treinamento (POS T) e após oito semanas de destreinamento (POS D). Foram realizadas infiltrações intra-articulares de joelho com uma dose única de Hilano GF-20 e dinamometria isocinética para determinar o torque máximo em extensão e em flexão do joelho. A dor foi medida através da escala visual analógica (EVA). Resultados As intervenções promoveram melhorias na resposta isocinética em todos os três grupos e em ambos grupos musculares, com vantagem para o grupo extensor. Observou-se uma diferença significativa na resposta isocinética dos grupos treinados quando comparados ao grupo somente viscossuplementado (p<0,005), além disso o grupo VTF apresentou melhor resposta isocinética quando comparado ao grupo TF. Conclusão O tratamento combinado de viscossuplementação e treinamento de força e o tratamento com o treinamento de força apenas apresentaram melhores resultados na resposta isocinética e na redução da dor do que o tratamento apenas com viscossuplementação. Nível de evidência I; Estudos terapêuticos-Investigação dos resultados do tratamento.
RESUMEN Introducción Viscosuplementación y entrenamiento de fuerza son intervenciones propuestas en el tratamiento de osteoartritis de rodilla. Objetivo Describir la respuesta isocinética en mujeres con osteoartritis de rodilla sometidas a ambas intervenciones. Métodos Ensayo clínico doble ciego y aleatorizado que involucró a 30 mujeres con diagnóstico de osteoartritis bilateral de rodilla de grados II y III utilizando los criterios radiológicos de Kellgren y Lawrence. Ellas fueron aleatorizadas en tres grupos con diez pacientes cada uno: un grupo fue sometido a viscosuplementación y al entrenamiento de fuerza (VEF), el otro sometido al entrenamiento de fuerza (EF) y el tercer grupo sometido sólo a la viscosuplementación (VS). Todas las evaluaciones siguieron las fases del estudio definidas como pre-procedimiento (PRE); después de 48 horas de la VS (POS-VS); después de 12 semanas de entrenamiento (POS E) y después de ocho semanas de desentrenamiento (POS D). Fueron realizadas infiltraciones intraarticulares de rodilla con una dosis única de Hilano GF-20 y dinamometría isocinética para determinar el torque máximo en extensión y en flexión de rodilla. El dolor fue medido a través de la escala visual analógica (EVA) Resultados: Las intervenciones promovieron mejoras en la respuesta isocinética en los tres grupos y en ambos grupos musculares, con ventaja para el grupo extensor. Se observ ó una significativa diferencia en la respuesta isocinética de los grupos entrenados cuando comparados solamente al grupo viscosuplementado (p<0,005), además el grupo VEF presentó mejor respuesta isocinética cuando comparado al grupo EF. Conclusión El tratamiento combinado de viscosuplementación y entrenamiento de fuerza y el tratamiento con entrenamiento de fuerza sólo presentaron mejores resultados en la respuesta isocinética y en la reducción del dolor que el tratamiento con sólo viscosuplementación. Nivel de evidencia I; Estudios terapéuticos-Investigación de los resultados del tratamiento.
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The viscosupplementation and strength training are interventions accepted in the treatment of knee osteoarthritis. Objective: The study describes the effect of two interventions in quality of life and functional capacity. Method: Thirty women diagnosed with bilateral knee osteoarthritis of grade II and III by radiological criteria of Kellgren & Lawrence, were randomized into three groups with ten patients each: VSTF group submitted to viscosupplementation and strength training, TF group submitted only to strength training and VS group submitted only to viscossuplementation. Moments of the study were defined as pre-procedure (PRE), after 48 hours of VS (POS-VS) after 12 weeks of training (POS T) and after eight weeks of detraining (POS D). Quality of life was assessed by the SF-36 BRAZIL, functional capacity by Lequesne index. Intraarticular infiltrations were carried out with a single dose of 6 ml / 48 mg with 6,000,000 kDa Hylan GF-20 and strength training sessions were held for twelve weeks. Results: Strength training and viscosupplementation were effective in the treatment of knee osteoarthritis. Both interventions promoted improvements in quality of life and in functional capacity (p < 0.001), with advantage to the groups that trained force. Conclusion: Strength training is a possible replacement of viscosupplementation in the treatment of osteoarthritis of women's knees. However, the beneficial effect of viscosupplementation in pain reduction suggests better efficiency in the strength training execution which may be an advantage of the association of both