MIRIAM MASLO / SCIENCE PHOTO LIBRARY MIRIAM MASLO / SCIENCE PHOTO LIBRARY
Healthy hand. Coloured X-ray of a healthy hand and wrist joint. There are eight wrist (carpus) bones, known collectively as the carpal bones (bottom right), which articulate with the bones of the forearm (ulna and radius) 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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