I have one of those, also from a cycle ( motorcycle) accident. I never went to the emergency room and only had it xrayed after I noticed the clavicle looked strange from the outside.
It is loose (unknit) and this has not affected my hammock comfort. My right index finger has been kind of numb since then.
During recovery, I slept best on my side, (Probably with the injured side up although I don't remember now). I do remember that a lot of pillows were involved.