Oh wow! That sounds rough.

I have a nice full arm cast from my elbow to my wrist (Oberarmschiene). I just learned that I will have it removed next week already, because they don’t want to immobilize it for too long, but I was told it will hurt a lot after it’s removed, so we’ll see how that goes…

My thumb is indeed mobile, but my wrist is locked in place, so it is indeed quite uncomfortable to grip a mouse.