Which human finger is used more than any other?

I asked this question in reference to a fall my wife had in our kitchen. At midnight, she was cleaning dust off the top of our fridge. She was standing in a wabbly chair and the chair gaveway with her. She fell and hit the wood kitchen floor, on her right little finger and broke it. Her doctor said it would heal on its own. Little did we realize how important our little fingers are. She does not dust at midnight anymore, Her doctor further stated that the human little finger is used more than any other finger. Its mostly for balancing our hands. I never thought of this in this manner. Question: do you agree with my wife’s doctor, that our little finger is the most-used finger on each hand?