Yes nedrapier, definitely ACJ, spent last night in A&E being told “this is super rare, its usually the collarbone!” and thinking “well that makes me feel a million times better”
I probably done the same as you – came off, felt my shoulder and realised something was wrong, felt along the collarbone, realised it was all in one piece, thought “oh, its just dislocated, easy fix”… Errr…. No!
I have just actually been reading your authored post on it after doing a bit more searching and it seems I’m in for a bit of a recovery period, I am on holiday from work this week and was hoping to be back at work Monday! Maybe possible if the pain does down as I’m a desk Jockey anyway, we’ll see…