Estudo das características biomecânicas do tronco, quadril, joelho, tornozelo e pé associado à intervenção com biofeedback em mulheres com dor femoropatelar durante diferentes atividades funcionais

Abstract

Patellofemoral pain (PFP) is one of the main diseases of the lower limbs, especially physically active women. The etiology is multifactorial and is directly linked to biomechanical disorders in the lower limb. Dynamic knee valgus is one of the major lower limb misalignment linked to PFP. Among the biomechanical characteristics in dynamic knee valgus, we highlight the excessive movement of hip adduction and internal rotation during closed kinetic chain activities, especially the squat. In addition to squat, dynamic valgus is described in other activities considered as low impact, such as stair climbing, and descending, walking and step downs tests, however, when we look for comparative information between high and low impact activity there is a gap in the literature. Furthermore, the kinematic behavior of the foot has been frequently associated with patellofemoral pain, however, studies evaluating the kinematic specifically during the functional activities through a multisegmented model are also scarce in the literature. Regarding treatment, there is no consensus about best approach, but the kinematic biofeedback has become an increasingly useful tool. The application can intervene directly in the joints of interest. Therefore, this PhD thesis was divided into 3 studies, with the following objectives: 1: Assess through kinetic and kinematic variables, the phase of high-impact single leg triple hop test (SLTHT) promotes more biomechanical changes in lower limb the phase of the low impact; 2: Compare the women foot kinematics with patellofemoral pain and pronated foot with asymptomatic during the implementation of the previous step down and side; and 3: To assess whether the 20% reduction results hip adduction or an increase of 20% of the anterior trunk tilt through kinematic biofeedback display different results when given the verbal biofeedback to lower hip adduction and most anterior trunk flexion and to evaluate whether these strategies are able to improve the pain immediately of women with patellofemoral pain during the squat.