Knock knees can often by normal( physiological) at 4 years of age. In most cases it should become normal by 7-8 years of age. However a clinical examination should be done to look for other signs of rickets (
vitamin D deficiency). If no other signs of rickets is there in the body only observation would work. If signs of rickets (vitamin d deficiency) is there in the body blood work up has to be done.
Next Steps
Observe to see if the deformity resolves on it’s own by 7 years of age. If it doesn’t visit an orthopaedic surgeon to see the magnitude of deformity and manage accordingly.
Health Tips
If other signs of rickets (
vitamin d3 deficiency) present in the body -Get a baseline serum
calcium, ALP and Phosphate done. Get a baseline vitamin D3 levels done along with a
kidney function tests.