do baby's have knee caps?

Question

someone at work said they don't

Answer 1

"Newborns do have kneecaps, Cathy. Kneecaps form about the fourth month of fetal life. However, they don’t show up on x-ray very well because they’re not ossified, or bony. At this point in life, the kneecaps are made of a cartilaginous material. The growth centers surrounding the kneecap form late in developmental life in utero and may not appear until just before or just after the infant is born.

Remember, infants are a work in progress. The potential for linear bone growth may continue until the late teens or early twenties. Although all the precursor tissues for the major bones are present at or immediately after birth, centers of ossification (where bone is laid down) continue to develop throughout childhood and beyond. For instance, the head of the femur appears at four months, the patella, or kneecap, starts showing signs of ossification at about 3 years in females and 4-5 years of age in males. Parts of the pelvic girdle (hips) don’t appear ossified until adolescence with the tubercle of the pubis not appearing until 18-20 years of age.

Why does this progressive development happen? As usual, we don’t know. There are clues that can lead to some speculation. When raised in tissue culture, the fetal tissues in question will form as cartilage, but will not ossify into bone. It is only with the presence of weight-bearing forces (along with the presence of chemical mediators) that these tissues ossify. In an article in Scientific American in 1995, researchers suggest that the reason that biological change happens is to promote the widest spread of DNA. In an evolutionary sense, it means the individual survives to reproductive age and can have children ("spread of DNA"). If creatures spent good energy ossifying bones before they were needed to bear weight, less energy would go to other developmental processes such as bodily growth or brain development, things that in the long run would be more likely to enhance the survival of the individual. "
http://www.madsci.org/posts/archives/may97/861940964.An.r.html

Answer 2

Not when they are born, they develop at about 2 years

Answer 3

the person at work is right, kneecaps are developed 6-8 weeks after being born

Answer 4

someone's pulling the wool over your eyes...
Of course baby has knee caps (patellas).

Answer 5

my doctor said they don't develop knee caps until they are a toddler, feel it, you can tell it's not there.

Answer 6

Ive heard they don't and when I had my babies I felt for them and didn't feel any! Don't know for definite though they might just be soft cartilage at first.

Answer 7

of course they do how on earth can they grow a top half and a bottom half wi out owt between?!
they maybe soft lil things but if they dont where the hell did them 2 lumps come from that look like knees?

Answer 8

Of course they do! Like the other bones in the body they need to get stronger& harder which they do as they age.

Answer 9

they do but its soft cartilage so it takes a while for it to form hard,
your both right in a way

Answer 10

they do its just very soft 6 weeks at its a bit harder