Explanation: An unqualified column name is. ambiguous if more than one table or view identified in. the FROM clause has a column with that name, or if. more than one column of a nested table expression has. that name.
The exact cause of clubfoot is unknown, but doctors agree that a family history of clubfoot increases the likelihood that a child will be born with the condition. In addition, mothers who smoke and drink during pregnancy are more likely to give birth to a child with a clubfoot or clubfeet.
For example, clubfoot has been associated with other structural abnormalities 10% to 14% of the time in neonatal series and as high as 80% in prenatal series (5 ,7,8). It can also be associated with many genetic syndromes (3 ,4). Clubfoot is a combination of 4 deformities: 1  Hindfoot equinus (reversed calcaneal pitch).2  Hindfoot varus (inward rotation; talocalcaneal angle of almost zero on AP view with bones parallel to each other).t can also be associated with many genetic syndromes (3 ,4). Clubfoot is a combination of 4 deformities: 1  Hindfoot equinus (reversed calcaneal pitch). 2  Hindfoot varus (inward rotation; talocalcaneal angle of almost zero on AP view with bones parallel to each other).