KCT0001717.

Study name	The effects of talus control foot orthosis in children with flexible flatfoot
Methods	Randomised control trial
Participants	N = 40 Inclusion criteria: diagnosed with flexible flatfoot; visited the Department of Pediatric Rehabilitation over 6 years Exclusion criteria: rigid flatfoot caused by hereditary foot disease or neuromuscular disease, fixed foot deformity, or previous surgery history
Interventions	Device: plantar orthoses
Outcomes	X‐ray measurements of the angles: talus‐calcaneus, talus‐navicular, and talus‐first metatarsal angle
Starting date	7 December 2015
Contact information	So‐Young Ahn
Notes	Chungnam National University Hospital, Republic of Korea