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Ametapodia is an inherited bone disorder characterized by abnormal limb development. It occurs as a result of a mutation in certain strains of light brown leghorn chickens. The disorder is autosomal recessive. Affected chicks that are born with the disorder usually die within 2-4 days following hatching. The mutation results in the chickens not having tarsometatarsals, and also develop severe hypoplastic metacarpals.

Clinical Signs

Significantly shortened wing
Absence of tarsometatarsus


  • History
  • Clinical signs


Supportive care



Don't inbreed


Scientific References

Risk Factors

  • Purchasing chicks of the brown leghorn strain chickens