What does congenital anomaly of the radius and ulna mean?

Aplasia, hypoplasia.: Absence (aplasia) or smallness (hypoplasia) of the forearm bones can be seen as isolated of syndromic findings in rare congenital anomalies. Anemia (fanconi's) and thrombocytopenia (tar syndrome) can be seen in association with those defects. Etiology: idiopathic (unknown), trisomy 18, amniotic band sequence, vrious syndromes.

Difference: An anomaly is a difference from what we perceive as normal. Sometiems referred to as a congenital difference or congenital disorder the radius and ulna are bones of the forearm. There is a wide range of things that fall into this category.