The left image is a radiograph of the hand of a young patient with achondroplasia. The characteristic "trident" deformity is present, consisting of separation of the first and second as well as the third and fourth digits. Notice the shortened tubular bones of the hand, particularly the proximal phalanges.
The right image is of an adult. Reidentified are the short tubular bones with a gracile distal ulna, characteristic of achondroplasia.