With that said, my actual left thumb was crooked, and it has been crooked my whole life. The proximal joint
can bend too much with ease, all the way down to my palm, and it's very unstable and wobbly. The distal joint is where the crooked bend is at, and it cant bend enough. There's a sensitive lump of scar tissue where the sack was. And from what I've noticed, the thumb is the way it is because its tendons and ligaments are all screwed up and off center.