Aplasia/Hypoplasia of the radius

• Absence or underdevelopment of the radius bone of the arm
• Absent/small radius
• Absent/underdeveloped radius
• Radial aplasia/hypoplasia

• has_part some (
      aplastic/hypoplastic and
      inheres in some radius bone and
      has modifier some abnormal)

• Abnormality of the radius
• Aplasia/hypoplasia involving forearm bones