It is unclear whether the cause of the<unk>  thumb is<unk>  or acquired. The occurrence of bilateral incidence and<unk>  thumbs in both children of twins are an indication for a<unk>  cause.<unk>  thumb in children is also associated with trisomy of chromosome 13. For these reasons it was assumed that<unk>  thumbs in children are to be of<unk>  cause. However, more and more evidence which point towards an acquired cause have been found in recent studies. Therefore, the name pediatric<unk>  thumb is also widely used (and currently preferred by some) for the same disorder.
Congenital trigger thumb
Congenital clasped thumb
Adducted thumb syndrome
Mallet finger
Blue toe syndrome
Congenital contractural arachnodactyly
Hypothenar hammer syndrome
Radial dysplasia