Ultrasound Tech says baby has long legs

Emma • Mum to Harlen Jane🌷July 6th,’18 & Nolan Stone 🍭June 28,’19

Today at my ultrasound, the tech kept saying how our baby has such long legs. I don’t know the science (if there is any) behind this, maybe some of you do...Does this have anything to do with having a tall child? ..like once they’re grown up? Or is this more of just a fun fact?