In reply to Brian:
When I bust mine, it was immobilised in a plaster for 2 months, then another six weeks of non load bearing, which did the job. I did a lot of walking that summer.
There was never any suggestion of any other treatment, however I am very aware that one persons problem and subsequent treatment might not have any bearing at all on the recommended treatment of another persons problem. The break was picked up one week after the event so maybe that also dictated the course of treatment.
One thing I was aware of at the time was that a broken scaphoid was regular injury to professional motocross riders and that returning to action too soon led to a lot of further long term problems, so I was very conservative with the treatment and timescales.
John