Last month, a man I know had surgery on his hand, the second surgery on the same hand.
After the first surgery his hand had lost quite a bit of feeling. On the one hand (no pun intended), that meant it didn’t hurt any more. But on the other, no feeling meant he couldn’t do his job, which requires using both hands and all his fingers.
After the second surgery his hand was still numb, which was a huge disappointment for him. But then during the middle of the night it started hurting. His wife told me he was happy for the pain because that meant he could feel again.