edwards afb; eglin afb; eielson afb; ellsworth afb; f.e. warren; fairchild afb ; grand forks afb; hanscom afb; hawaii - air force; hill afb; holloman afb; homestead arb; hurlburt field; joint base pearl harbor-hickam; keesler afb; kirtland afb; lackland afb; laughlin afb; little rock afb; los angeles afb; luke afb; macdill afb; malmstrom afb; march arb; maxwell-gunter afb; mcchord afb; mcconnell afb
1 It is reported that amyoplasia comprises 43% of reported cases. 2  No racial tendency is present. 3  Males are more affected in X-linked recessive disorders; otherwise, females and males are equally affected.  Arthrogryposis is detected at birth or in utero using ultrasound.
The gene for achondroplasia, the most common type of dwarfism, was discovered in 1994. Achondroplasia is caused by a gene mutation that is the same in 98% of the cases. The mutation, affecting growth, especially in the long bones, occurs early in fetal development in one out of every twenty thousand births.