Hello doctor, my son has flat feet. We checked with doctor, he took some blood tests and found he has calcium and vitamin D deficiency. And suggested to give calcium and vit D supplements for a month, then stop it for 15 days and again blood test should be taken. I have completed the whole course and next week going to take again blood test for him. I can see him active than before. but I'm worried for his flat feet. how can it be improved. As we can see his legs looks different. and feet also he keeps bending inward. please suggest something for flat feet problem. thanks in advance