The normal gain in length in a full term baby at first 6 months of life is
At bih length : 50cms At 3 months : 60cms At 6 months: 65 cms At 1yr: 75 cms Hence gain in length in a full term baby at first 6 months of life is 15cms Ref: Ghai, 9th edition, Table 2.3
6cms
9 cms
15 cms
24 cms
General anatomy