Functional bandage on biomechanical parameters in the knee

Background: Postural changes in the lower limb influencebiomechanically and functionally the other joint complexes, which may be related to myofascial dysfunctions. The functional elastic bandages seem to promote muscle activation that may go against the valgus pattern of the knee. Objective: To evaluate the acute response of the use of elastic bandages applied in the direction of the line of action of both fascial chains, valgus or varus, during a gait cycle. Methods: A descriptive case study was carried out with a young adult volunteer with genuine valgus and pronated feet. Electromyographic data were collected from the Middle Gluteal, Tensor Fascia Lata, Vasto Lateral and Vasto Medial muscles during gait at two speeds and two techniques for applying different functional bandages. The order of speeds and techniques for applying functional bandages was randomized by simple drawing. For the kinematic capture of gait, support and balance cycles, a Cinemetry system with 6 infrared cameras was used. The Electromyographic signal was processed to obtain the maximum voluntary contraction. Results: The results were divided into a sign of inhibited muscle activation or with greater activation during the execution of the movement. There was greater activation of the middle gluteal muscle during the support phase in gait with the use of varus banding and greater activation of the vastus during the same phase with the use of valgus bandage. Conclusion: In this case study, different strategies for applying functional bandages impacted different neuromuscular responses during gait.