Just thought I'd post a 10 week update, Grade 5 separation, AC joint reconstructed using hamstring.
Basically I'm super happy at this stage with how things are gone. The first six weeks were tough, but I really got stuck into rehab. ROM & strength have seriously really kicked on since then, and the level of background pain now is quite low.
It's a relief in a way as both the physio and surgeon mentioned that what you have at 3-4 months recovery is pretty much what you'll have from that point on. Ealier on it was a bit like, damn I'm going to be stuck with this sh*t shoulder. Thankfully not the case.
I started back on the MTB at 4 weeks, and have slowly been getting back up to speed. I'm just at the point now where I can begin to ride aggressively, still a long way from pre-injury but pretty cool none the less. Critical thing in the short-mid term remains not to crash and re-injure shoulder.
Other cool things: I can now sleep on my side, injured shoulder down, which has really helped the quality of sleep. I've also been able to return to work in a fairly physical job. I can pretty much do most day to day things with that side of my body, which is also my dominant side. The surgeon encouraged a fairly aggressive approach to rehab, and touchwood that seems to have worked well for me.
Still working away on rehab exercises. Strength both away from my body and above shoulder height is going to take a while yet.