Fig. 4
From: Progression of planovalgus deformity in patients with cerebral palsy
Scatterplots showing the progression of the talo-second metatarsal angles according to age for Gross Motor Function Classification System (GMFCS) levels I (a), II (b), and III (c). There is a positive correlation between the talo-second metatarsal angle and the follow-up duration for GMFCS levels II and III. The points represent all the foot radiographs obtained. The solid lines represent an estimation of the progression by a linear follow-up duration effect