I would imagine numerous people on here have broken their scaphoid bones due to a fall onto an outstretched arm (FOOSA as they call it in A&E) from a bike. Very very common and sometimes missed as they can just feel like a bad ligament strain.
I broke my right scaphoid in 2008 and it required surgery at the end of the year due to a missed diagnosis....but this is not required for all obviously....depends on how bad the break was....they have blood supply from what is called an end artery which means that they struggle to heal depending upon where the break is in the bone (across the waist of the scaphoid or lower) due to lack of blood supply so they necrotise and arthritis can ensue. Some range of movement can be lost if they require surgery or fail to heal well.....
But hey....most probably heal ok without much loss of range of movement.
Hope this helps
Merlin Elevator FS 93', Kestrel MXZ 90',
Funk Pro Comp 93', Funk Force GS 94',
Team Marin 90' & 91', Orange C16-R 95',