How many months can a baby's patella become hardened?

Patient's question:

No

Doctor's answer:

Hello, everything is normal. Baby's bones are all soft and then harden. Generally, around 3 months, they become very firm. There's no need to specifically supplement calcium; just get more sun exposure. I suggest you trim a little of his hair and take him to the hospital for a trace element test to check if the baby is deficient in calcium.