• Adriana da Costa Gonçalves, GuirroRinaldo Roberto de JesusRRJ0000-0001-7491-3388Universidade de São Paulo, Faculdade de Medicina de Ribeirão Preto, Postgraduate Program in Rehabilitation and Functional Performance, Department of Health Sciences - Ribeirão Preto (SP), Brazil., Lidia Aparecida Rossi, Jayme Adriano Farina Junior, Camila Silva de Carvalho, Ana Paula Ferro, and GuirroElaine Caldeira de OliveiraECO0000-0002-1045-8053Universidade de São Paulo, Faculdade de Medicina de Ribeirão Preto, Postgraduate Program in Rehabilitation and Functional Performance, Department of Health Sciences - Ribeirão Preto (SP), Brazil..
• Universidade de São Paulo, Faculdade de Medicina de Ribeirão Preto, Postgraduate Program in Rehabilitation and Functional Performance, Department of Health Sciences - Ribeirão Preto (SP), Brazil.
• Rev Assoc Med Bras (1992). 2022 Jan 1; 68 (12): 175917641759-1764.

ObjectiveThis study aimed to compare the effects of therapeutic ultrasound and paraffin with or without vacuum massage on the biomechanical properties of grafted skin after a burn.MethodsA total of 44 patients with deep second- and third-degree burns, with a mean age of 35.89 (±11.53) years, who visited the Hospital Burn Unity, were included in the study. The therapeutic interventions were randomly defined by drawing lots, with a crossover design (crossover), and a minimum interval of 7 days (washout) between interventions. Skin biomechanical parameters such as distensibility (R0) and viscoelasticity (R6) were noninvasively evaluated by Cutometer before and after 0, 10, 20, and 30 min of intervention with therapeutic ultrasound and paraffin alone, as well as associated with negative pressure therapy of the skin (vacuum therapy). In this study, all groups showed increased distensibility (R0) in the period immediately after the application of the resources and a progressive reduction in the effects in the consecutive tests. Participants with skin grafts showed a decrease in viscoelasticity (R6) in all groups, except therapeutic paraffin and therapeutic ultrasound and vacuum massage.ConclusionThe biomechanical properties of grafted skin after a burn are altered after therapeutic intervention with ultrasound alone or associated with vacuum massage, such as intervention with paraffin associated with vacuum massage, for both parameters evaluated, skin distensibility (R0) and skin viscoelasticity (R6). However, the same did not occur for the intervention with isolated paraffin. There was no significant difference between the interventions therapeutic ultrasound and therapeutic paraffin.

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