PATHOLOGY

Detailed explanation-1: -A baby’s body has about 300 bones at birth. These eventually fuse (grow together) to form the 206 bones that adults have. Some of a baby’s bones are made entirely of a special material called cartilage (say: KAR-tel-ij). Other bones in a baby are partly made of cartilage.

Detailed explanation-2: -Babies have more bones than adults because as they grow up, some of the bones fuse together to form one bone. This is because babies have more cartilage than bone. New born babies have around 305 bones.

Detailed explanation-3: -Changing bone as babies grow As your baby grows into childhood, much of that cartilage will be replaced by actual bone. But something else happens, which explains why 300 bones at birth become 206 bones by adulthood.

Detailed explanation-4: -Babies are born with around 270 to 300 bones at birth. Over time, some of a baby’s bones fuse (i.e. grow) together, so that by the time your little one is in his 20s, he’ll probably have 206 bones.