Figure 5.4 Hand and wrist X rays are often used for assessment of skeletal age. The numerous hand and wrist bones provide multiple sites for comparison of a child’s X ray with the numerous standard X rays found in an assessment atlas. Here are two X rays from an atlas: (a) the standard for boys 48 months old and girls 37 months old, and (b) the standard for boys 156 months old and girls 128 months old. Note, in the later image, how much more ossification (hardening) has occurred in the small wrist bones and the larger ossified area at the epiphyseal plates of the hand bones and the forearm bones.
Reprinted, by permission, from S.I. Pyle, 1971, A radiographic standard of reference for the growing hand and wrist (Chicago: Year Book Medical), 53, 73. Copyright Bolton—Brush Growth Study—B.H. Broadbent D.D.S.