My friend has the problem too, but she is adult. You may consult Dr. Vincent W.H. Chan who is the chairman of Chiropractic Association HK (not sure the exact name of assocation) His clinic is located at Causeway Bay(Same buildingof SOGO). Perhaps, you ring the nurse for detail first. Tel : 2807 3711 (By Appointment)
I visited him for my spin & neck problems. Every treatment costed me $450. As my friend 's case, she needed to tailor-made a mould for her feet. It 's about 1 or 2 thousand. I can't remmember exactly. Hope you can find more info on the web-site.
I brought my son to The Duckness of Kent Children's Hospital at the age of 3. They do follow-up's too.
less than HKD100. You can call them direct to make appointment.