Annotated radiographs of the hands of an adult (above) and a child (below)
From childhood, the bones of the hand undergo major development. Note the changes in position and size among the bones of the wrist as well as the joining of the phalanges to their proximal epipheses (seen below as dark, narrow bands adjacent to each bone in the fingers of the five-year-old).
See if you can spot something unusual in one of the radiographs…
Illustration from Cunningham’s Manual of Practical Anatomy, 7th Edition (1920)