I had a comminuted colles fracture of right wrist. Had plaster on for 6 weeks and attempted AMS 6 weeks later. Lasted about a nano-second. However, I then knew exactly how much pain I was facing and gradually built up from one nano-second to two and so forth.
Once the bone has mended, and provided there was not a similar amount of soft tissue damage ,then it really does come down to how much pain you can stand. It took about 12 months before I realised I no longer had any pain/discomfort.