0002997 Abnormality of the ulna	0006503 Aplasia/hypoplasia involving forearm bones
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0006495 Aplasia/Hypoplasia of the ulna

synonym

Absent-hypoplastic ulnae

Hypoplasia or unilateral/bilateral absence of ulna

ulnar hypoplasia/aplasia

Absent/small ulna

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0003022 Hypoplasia of the ulna 3

0003982 Aplasia of the ulna