The pisiform, whose centre of ossification appears between 7.5 and 10 years, is the last carpal bone to ossify. The bone is fully developed by the age of 12.

What age does pisiform ossify?

Human pisiform ossification begins between 9 and 12 years of age [5]. This appears to be later in development than the primary ossification center of chimpanzees or gorillas; however, the comparative ossification timing across species and relationship between the primary and secondary centers remain unknown [4].

At what age do the carpal bones ossify?

The main finding in this study is that carpal bones start to ossify in the first year of life, starting approximately at the age of 6 months. This ossification of carpal bones starts with the capitate and hamate.