I'm not sure which was the most painful between following 2 experience of mine.
I like working in the garden and I like sharp tools. So the inevitable happened with an axe and fingers being to close to each other.
1 finger had the joint cut open. You could look at it.
The 2 other were less damaged 1 had 3 tendons cut the other only 2 tendons. It took weeks for the pain to be acceptable.
The second was an infection in the knee cause by a knee doctor with a injection needle. It got all infected and puss kept coming out of the needle prick hole. I went to the hospital a couple of times. It looks to me as if I'm to hard and they didn't take it seriously.
At the last visit I had pushed most of the pus out of the knee and I told the doctor I didn't care about another cut in my knee. So he agreed to open up the knee. I was flat on the table and he put in a injection to anesthetize. I think I hit the ceiling when he made the first prick 
. I think this was the point when they realized it was for real ]
So he cut without anesthetize. 8)
That was the cut of relieve.
Best regards
Jantje