My 9 year old son is in the 10th percentile for height/weight. The first few years of his life, he was in the 75th percentile, but over time, he went down to the 50th and finally the 10th percentile. I do remember from his ultrasound at around 39-40 weeks that the OB Gyn told me that his femur bone looked short (like a 35 week baby). When I asked him does that mean he will be short, he didn t seem to really know for sure. Is this an indicator that he will be short? I didn t worry about it much until the last year when I really started to see the height differences among his peers. Thank you, Melissa