I can't see any reason why it should cause you any lasting problems, Terry. Was it a clean break?
I broke my wrist some years ago, & it had to be reset once & still slipped slightly to the side as it healed. This extended the time I had the cast on slightly, & I think it was about 6 weeks in total. My wrist was very weak when the cast came off, & as I had bruised all my fingers as well when I fell, I had to work hard at regaining a proper grip. I had the usual(?) physio - arm in a bucket of ice, playing table tennis, exercising with a rubber ball to regain a strong grip, etc. I would think it took about a month after the cast came off for it to start to feel normal again, & it continued to ache if I over-used it for a while after that. I would think you will 'know' when you are ready to start bowing again, & it should help restore the flexibility as well.
I have lost a small amount of mobility in my wrist, which has not caused me any problems generally but it does show up when bowing. (I should point out at this stage that I wasn't playing the violin when I broke my wrist, it was 14 years ago.) I have to adjust my bow hold slightly to try & compensate for this.
Recently I had a course of physiotherapy to try & loosen my wrist up a bit, which has actually helped quite a bit. However, it looks as though several of the small bones in the back of my hand were jarred out of place when I had the accident, & there is some fusion there which, after all this time, can't be completely corrected.
So when you have your cast off, make sure you do all your physio & concentrate hard on regaining grip in your hand & flexibility in your wrist - & if anything doesn't feel at all right once you are regaining your strength, get an xray done to check things out. If you wait too long they may not be able to do anything about it.