BIRTH DEFECTS

Achondroplasia 
Achondroplasia, a form of dwarfism, is a bone growth abnormality. This disorder is considered a short-limb dysplasia which means that people with achondroplasia have an average-sized torso with small arms and legs. It can be caused by a spontaneous gene mutation or it can be inherited from a parent who has achondroplasia.
People with achondroplasia have relatively short upper arms and upper legs. They also may have shortened hands and stubby fingers, a large head with a prominent forehead and a flattened bridge of the nose, and sometimes reduced muscle tone. Usually the average full-grown height for someone with this disorder is around 4 feet.

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