When immigrants first came over to North America they brought the game of hockey with them. The first hockey game is believed to be played in Canada near Ontario around 1870 or so. It would be a long while until the NHL as we know it was to be born.
In a younger child, the surgery should be considered if congenital trigger thumb is not resolved by 12 months of age. Most surgical procedures for congenital trigger thumb can be postponed until the age of 2 yrs, but should be operated before 3 yrs because of possible flexion contractures.
For these reasons it was assumed that trigger thumbs in children are to be of congenital cause. However, more and more evidence which point towards an acquired cause have been found in recent studies. Therefore the name pediatric trigger thumb is also widely used (and currently preferred by some) for the same disorder.