The average weight for a boy of 37months is 14.5kg, height 97cm and head circumference 50cm. Your son's weight and height are on the 25th percentile line of the children's growth chart, yet his head circumference is on the 90th percentile line. It would be a good idea to ask your paediatrician to see him. I am almost sure that there is no need for concern but with his late closure of his fontanelle it would be best to have him seen.
Your son appears to have inherited your tendency to being pigeon toed with his right foot. It is causing him problems and he is probably beyond the age where it will 'self correct'. When you see the paediatrician ask for him to be referred to a paediatric orthopaediac specialist for an opinion.
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