Besides the clicking, snapping or<unk> ing, a characteristic Notta nodule is commonly found on the palmar side at the metacarpophalangeal (MCP) joint. This nodule can be found by palpation. Children can also present a thumb which they cannot extend actively due to entrapment of the nodule to the A1 pulley. Some may even present with a fixed flexion deformity of the IPJ where no extension is possible.
Congenital trigger thumb
Congenital clasped thumb
Adducted thumb syndrome
Mallet finger
Blue toe syndrome
Congenital contractural arachnodactyly
Hypothenar hammer syndrome
Radial dysplasia