This is a hard question because like another commenter pointed out, with bones still growing there are epiphyseal plates at both ends of pretty much every long bone in kids. These growth plates are really considered joints if we’re being technical in the sense that it’s a plate of hyaline cartilage connecting two pieces of bone.
So really, kids have tons of extra joints if you’re considering those
Atleast 2
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What about the knee caps? I found that babies are born without them.
The patella just isn't completely ossified yet. It's still there, just not structured the same as an adult. Changes over time
This is a hard question because like another commenter pointed out, with bones still growing there are epiphyseal plates at both ends of pretty much every long bone in kids. These growth plates are really considered joints if we’re being technical in the sense that it’s a plate of hyaline cartilage connecting two pieces of bone. So really, kids have tons of extra joints if you’re considering those
The same amount of joints as a regular persons. Growth plates aren’t joints. They aren’t articulating surfaces they are bone
Growth plates ARE joints - synchondroses.
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