The Smith subtalar arthroereisis implant (STA-peg) is used to correct sever
e collapsing pes valgoplanus in children. Flake and Austin modified the pla
cement of this implant to block the leading wall of the lateral talus. Twen
ty-one patients with a total of 40 STA-peg procedures were evaluated subjec
tively and objectively. The average age at the time of surgery was 9.7 year
s (4 to 16 years). The follow-up period averaged 36 months (12 to 90 months
). The subjective, objective, and radiographic results were positive and th
e complication rate was low. A significant advantage of the Flake-Austin mo
dification of the STA-peg placement in transverse planar dominant foot type
s is also noted.