So far, we have come across babies with floating thumbs on both hands, but we haven’t come across any cases where the first baby has a floating thumb and the second baby also has a floating thumb. Therefore, parents should not worry too much about this problem. You can look at the metacarpal bones during the pregnancy test and if you are sure that there are only four metacarpal bones, you can suspect thumb hypoplasia, which could be floating thumb, or it could be type V thumb hypoplasia, which means there is no floating thumb, nothing at all. We see a lot of floating thumb babies who are very smart, and we rarely come across floating thumb babies with intellectual problems or other developmental problems. So if your baby does have a problem with the thumb, then parents should not be anxious and we can solve the problem.