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Babies are born with knee caps
Babies do have kneecaps – they’re just softer than yours.
In babies and children, bones have to be strong enough to support the body, but soft enough to permit continued growth. Until adulthood, when bones reach their final size and strength, they are made of a mixture of hard bone and softer cartilage. The kneecaps are no exception.
A newborn baby’s patella (kneecap) is made almost completely of cartilage. Around age 3 to 5, areas of hard bone start to form in the patella, in irregular patches. These islands of bone expand and grow together over years, gradually fusing to form a firm kneecap around age 10-12.
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