In reply to david morse:
The risk of avascualar necrosis largely depends on whether it's a Type II or Type III dislocation.
I had a talus fracture (split in two and stitched back together with two stainless steel screws whcih I will have for life but which haven't casued me any problems) and type II dislocation: with these the sub-talar joint (talus/calcaneous (heal bone)) is dislocated (in my case by about 2cm) but the ankle joint (i.e. the joint betwwen the talus and the fibula & tibia) was intact. With this type of dislocation, the risk of AVN is 30%-50%.
With a type III fracture, the ankle joint is also dislocated and, in these cases, the risk of AVN is, I think, over 90%
The x-ray they do on Tuesday should give an indication of whether or not AVN has occurred as 6-8 weeks post-accident is considered the crucial tim ein assessing the risk (immediately after the accident is too soon to tell)
If the x-ray looks OK, you should still expect to be called back every 3-6 months for another x-ray as there is still a risk of it developing at a later stage. I had my accident in May 2006 and was finally discharged by my Orthopaedic Consultant in August 2007: it took him 15 months to be happy that teh risk of AVN was now negligable...so I'm one of the lucky 50%-70% (depending on which study your surgeon has read: it's a poorly understoond condition) of Type II talus dilslocators who hasn't developed AVN.
Even if the x-ray indicates bad news, it doesn't necessarily mean fusing the ankle..the Consultant in my local hospital (I had the operation to set the bone in a different hospital closer to the mountains) said there were various other means of dealing with it as AVN isn't always total: but he did say it was a serious condition, messy to treat and possibly requiring multiple operations
I hope you can take comfort from the fact that I too was given a very bleak and depressing prognosis on the day of the accident (you'll never climb a mountain again: count yourself lucky if you can walk to a bus stop was the gist of it!) but am now getting back to normal..my ability to negotiate unstable ground still isn't what it was (the ligaments around the sub-talar joint, which, in my case, are now composed of scar tissue, are crucial for this) so I have to be careful on scree for example. I can't run like I used to either (but can run short distances e.g to catch a bus without too much problem). I've started climbing indoors again (I have my reasons for waiting a little longer before heading outdoors again..but I reckon most moves other than foot jamming will be OK..although I should point out that I only climb easy stuff!) and regularly hill-walk (although my ankle is still sometimes stiff after a long walk with a heavy rucksack)
How soon you can get back to climbing really depends on how much ligament damage you've done (unfortuantely, you'll have done some ligament damage if you dislocated the bone)
To get back in action ASAP, assuming the bone is OK, you need to start physio as soon as you can..with a fracture this serious, the physio should triage you as an acute case so you should be seen very soon: hopefully your Orthopod will refer you on Tuesday: once my form made it through my local hospital's internal mail, I managed a next day appointment with the NHS Physio and have absolutely no complaints about them (I found them refreshingly positive after the bleak picture painted by the Orthopaedics!) although others on here have had different experiences. I bought a wobble board and cushion so I could do the exercises at home every day (ask the Physio first though as every injury is different)
There seem to be a few of us talus breakers on UKC: there was another thread a while back
http://www.ukclimbing.com/forums/t.php?t=246934&v=1#3637404
I also added this link in that thread
http://www.wheelessonline.com/ortho/hawkins_type_ii_talar_frx
Good luck and feel free to mail me if you wnat more info!