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Which bones fuse with age? Understanding skeletal development from birth to adulthood

A baby is born with approximately 270 to 300 bones, which is significantly more than the 206 bones an adult typically has. The reason for this difference is a natural, gradual process of bone fusion that continues from infancy through young adulthood, which explains which bones fuse with age. This developmental change is crucial for forming the strong, unified skeleton of a mature human.