If you do crack your knuckles, try to be gentle. And if you have pain, get your joint checked out before popping it again. Can you pull the finger out of the joint by cracking your knuckles?

If you get a pain in your thumb knuckle, where your thumb meets your palm, this is likely what you’re doing wrong.

“When he can manage the pain, he’ll be ready ... a severely jammed finger that prevents a person from straightening the outermost knuckle. The recovery time varies based on the severity ...