Descending stairs: Good or bad task to discriminate women with patellofemoral pain?

Publication date: September 2018
Source:Gait & Posture, Volume 65
Author(s): Aline de Almeida Novello, Silvio Garbelotti, Nayra Deise dos Anjos Rabelo, André Nogueira Ferraz, André Serra Bley, João Carlos Ferrari Correa, Fabiano Politti, Paulo Roberto Garcia Lucareli
BackgroundThere is no consensus on kinematics alterations during descending stairs in females with patellofemoral pain (PFP). In addition, there are no studies that have evaluated the three dimensional kinematics of the trunk, pelvis, hip, knee, and ankle using a multi-segmental model of the foot simultaneously during this task in patients with PFP and evaluated the subphases of stair descent. The objectives of this study were to compare the three dimensional kinematics of the trunk, pelvis, and lower limbs during different subphases of stair descent and identify the discriminatory capacity of the kinematic variables among women with PFP and healthy women.MethodsIn this cross-sectional study, thirty-four women with PFP and thirty-four pain free women between 18 and 35 years-old were submitted to three-dimensional kinematic evaluation during stair descent.ResultsIt was observed that kinematic differences between the groups occurred in the first double support phase of the stair descent, with the variables of internal rotation of the hindfoot in relation to the tibia in the initial contact (2.1°; sensitivity = 68.6%, specificity = 61.8%) and contralateral pelvic drop in load response (1.3°, sensitivity = 65.7%, specificity = 63.7%) presenting the best ability to discriminate women with and without PFP.ConclusionOur results suggest that kinematic changes during stair descent should be used with caution during the evaluation and decision-making process in women with PFP.



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