ABSTRACT
BACKGROUND: The application time of therapeutic ultrasound is an infrequently studied dosimetric variable that affects tissue repair. OBJECTIVES: The aim of this study was to evaluate the effects of different treatment times of therapeutic ultrasound (US) on the organization of collagen fibers in the tendons of rats. METHOD: Forty Wistar rats were selected (300±45 g), and the rats were divided into five groups (n=8 for each group): Control, without tenotomy or any treatment; tenotomy group, with tenotomy and without treatment; US groups (US1, US2, and US3), subjected to tenotomy and treated with US for one, two, or three minutes per area of the transducer, respectively. The animals were sacrificed on the 12th post-operative day, and the tendons were surgically removed for analyses of the collagen fiber organization by means of birefringence analysis. RESULTS: The collagen fibers exhibited better aggregation and organization in the US3 group compared with the tenotomy group (p<0.05). CONCLUSIONS: The findings suggest that US applied for three minutes per treated area improves the organization of collagen fibers during rat tendon repair. .
Subject(s)
Animals , Male , Rats , Collagen , Tendons/anatomy & histology , Ultrasonic Therapy/methods , Extracellular Matrix , Rats, Wistar , Tenotomy , Time Factors , Tendons/surgeryABSTRACT
Objetivo - Investigar o efeito da administração tópica de cetoprofeno por iontoforese em indivíduos com osteoartrose de joelho, tendo como critérios de avaliação a dor e a funcionalidade da articulação tratada. Métodos - Participaram do estudo 26 indivíduos de ambos os sexos, com idade superior a 50 anos. O tratamento consistiu na aplicação tópica de cetoprofeno por iontoforese na região ântero-lateral do joelho, totalizando 10 sessões. O quadro doloroso foi avaliado por meio da Escala Visual Analógica (EVA) e a funcionalidade por meio da Escala de Lysholm antes e após o período de tratamento. Resultados - Todos os sujeitos relataram redução no quadro álgico e, a funcionalidade de joelho obteve inicialmente escore médio de 37 e após o período de tratamento este evoluiu para 73,2 pontos. Conclusão - A aplicação tópica de cetoprofeno por iontoforese diminuiu a dor e aumentou a funcionalidade de indivíduos com osteoartrose de joelho.
Objective - To investigate the effect of topical administration of ketoprofen by iontophoresis in subjects with osteoarthritis of the knee, having as assessment methods the pain and functionality of the treated joint. Methods - The study included 26 subjects of both sexes, aged over 50 years. The treatment consisted of topical application of ketoprofen by iontophoresis on the anterolateral knee area, totaling 10 sessions. The painful area was analyzed with a Visual Analogue Scale (VAS) and functionality through the Lysholm scale before and after the treatment period. Results - All subjects reported a reduction in painful episodes, and the functionality of the knee initially obtained a mean score of 37 and after the treatment period this progressed to 73.2 points. Conclusion - The topical ketoprofen iontophoresis was effective in reducing pain and increasing function in subjects with knee osteoarthritis.