RESUMO

OBJECTIVE: The purpose of this study was to investigate mobility performance in dogs suffering from hip osteoarthritis secondary to hip dysplasia using kinesiology. MATERIALS AND METHODS: Twenty dogs with a radiographical diagnosis of bilateral hip dysplasia and hip osteoarthritis and 20 healthy dogs were submitted to kinetic and kinematic analysis while climbing upstairs, walking down a slope, sitting down, standing up, and walking. Dogs were also scored by two blind examiners using a visual analog scale (VAS). RESULTS: Dysplastic dogs had lower peak vertical force (4% of body weight on average), increased symmetry index (12.6% difference on average) and reduced maximum hip joint extension angle and range of motion (ROM) in all tests. Mean hip joint range of motion difference was 11, 20, 25.4 and 25.2 degrees (walking, climbing upstairs, walking down a slope, sitting down and standing up exercise respectively). The VAS scores varied widely between examiners; still, healthy and dysplastic dog mobility differed across all physical test tasks. CONCLUSION AND CLINICAL RELEVANCE: Gait changes were observed in all physical tasks performed by dysplastic dogs with hip osteoarthritis, particularly in those requiring higher levels of effort. Comprehensive, quantitative assessment of dogs suffering from hip osteoarthritis across a range of physical activities is recommended.

Assuntos

RESUMO

Quando um exercício é realizado ocorrem diversas contrações muscula-res, transformando a energia química proveniente da dieta em energia cinética. Porém, nenhum organismo consegue uma eficiência de 100% nesse processo, sendo assim, o restante da energia é convertida em energia térmica, gerando calor, que será transportado para tecidos mais superficiais e dissipado através da pele, essa liberação de energia pode ser captada com o emprego da termografia, que registra a emissão de radiação infravermelha, indicando a temperatura corporal. Este estudo observou o comportamento térmico das regiões articulares de mem-bros posteriores de cães saudáveis submetidos a diversas atividades e avaliou quanto cada articulação é exigida para a realização desses exercícios. Doze animais saudáveis foram submetidos a vários tipos de atividades: subir escadas, descer rampas, sentar e levantar, e caminhar. Foram medidas as temperaturas corporais de região das articulações coxofemoral, do joelho e tibiotársica, de ambos os lados dos animais, antes e após os exercíos. Posteriormente à mensuração e análise es-tatística dos resultados foi observada apenas uma pequena alteração térmica entre as articulações antes e após o exercício, sugerindo que o exercício leve necessita de menor exigência das articulações estudadas do que o exercício intenso, como reportado por outros estudos.(AU)

Many muscular contractions occur when an exercise is performed, transforming the chemical energy from food ingested into kinetic energy. No organism can achieve 100% efficiency in this process; the remaining is thus converted into thermic energy, generating heat that will be transported to superficial tissues and dissipated through the skin. Such energy release can be captured and measured by thermography, which registers infra-red emissions, indicating the body temperature. This study observed how the joints of the hind legs of healthy dogs thermally behave when submitted to different activities to evaluate how much each joint is required for the execution of the exercises. Twelve healthy dogs were submitted various activities: going up stairs, going down ramps, sitting and standing, and walking. The temperature of the hip, knee and tibiotarsal joints were measured on both sides of the animals before and after the exercises. The statistical analysis of results showed that a slight thermic variation occurred between the joints before and after the exercises, suggesting that soft exercises do not require as much from the studied joints as intense exercises, as reported in other studies(AU)

Assuntos

RESUMO

Quando um exercício é realizado ocorrem diversas contrações muscula-res, transformando a energia química proveniente da dieta em energia cinética. Porém, nenhum organismo consegue uma eficiência de 100% nesse processo, sendo assim, o restante da energia é convertida em energia térmica, gerando calor, que será transportado para tecidos mais superficiais e dissipado através da pele, essa liberação de energia pode ser captada com o emprego da termografia, que registra a emissão de radiação infravermelha, indicando a temperatura corporal. Este estudo observou o comportamento térmico das regiões articulares de mem-bros posteriores de cães saudáveis submetidos a diversas atividades e avaliou quanto cada articulação é exigida para a realização desses exercícios. Doze animais saudáveis foram submetidos a vários tipos de atividades: subir escadas, descer rampas, sentar e levantar, e caminhar. Foram medidas as temperaturas corporais de região das articulações coxofemoral, do joelho e tibiotársica, de ambos os lados dos animais, antes e após os exercíos. Posteriormente à mensuração e análise es-tatística dos resultados foi observada apenas uma pequena alteração térmica entre as articulações antes e após o exercício, sugerindo que o exercício leve necessita de menor exigência das articulações estudadas do que o exercício intenso, como reportado por outros estudos.

Many muscular contractions occur when an exercise is performed, transforming the chemical energy from food ingested into kinetic energy. No organism can achieve 100% efficiency in this process; the remaining is thus converted into thermic energy, generating heat that will be transported to superficial tissues and dissipated through the skin. Such energy release can be captured and measured by thermography, which registers infra-red emissions, indicating the body temperature. This study observed how the joints of the hind legs of healthy dogs thermally behave when submitted to different activities to evaluate how much each joint is required for the execution of the exercises. Twelve healthy dogs were submitted various activities: going up stairs, going down ramps, sitting and standing, and walking. The temperature of the hip, knee and tibiotarsal joints were measured on both sides of the animals before and after the exercises. The statistical analysis of results showed that a slight thermic variation occurred between the joints before and after the exercises, suggesting that soft exercises do not require as much from the studied joints as intense exercises, as reported in other studies

Assuntos