Fig. 1From: Foot and ankle characteristics and dynamic knee valgus in individuals with patellofemoral osteoarthritisFoot mobility and frontal plane projection angle measurements. Measurement of arch height non-weightbearing (a), and weightbearing (b). Measurement of midfoot width non-weight bearing (c) and weight bearing (d). Measurement of the frontal plane projection angle at the deepest point of the single-leg squat (e)Back to article page