AJ PHOTO / SCIENCE PHOTO LIBRARY AJ PHOTO / SCIENCE PHOTO LIBRARY
Child's hand. X-ray showing the normal configuration of bones in the hand of a six year old child. Bones appear white. The eight wrist (carpus) bones, known collectively as the carpal bones, are still developing. The carpal bones articulate with the bones of the forearm, the ulna (bottom left) and radius (bottom right), to form the wrist joint. From the carpal bones the five metacarpals extend through the palm and join to the phalanges, the finger bones.
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