OK, so I know the obvious answer is to ski in them for a few days and see how things go (and that is absolutely what I am going to do). However, it's not snowing yet so some of you more bio-mechanically minded folks may like to have a think about this one:
I had a chronically unstable right ankle for a long time - too much rugby - and tended to fall over a lot when hiking downhill!
This summer I had surgery to tighten up the joint. A modified Brostrom procedure was used. Both the ATFL and CFL were cut, overlapped, and stitched back together and the retinaculum was pulled over the ligaments and secured to the fibula to strengthen the repair.
A few months down the line and the joint is now super-stable and I've been hiking up and down mountains with no problems. Good ROM with flexion, but nice and tight laterally. Minimal scarring.
I've always been lucky with boots and not needed any work, my current Dalbello Axion 11's were a fit out of the box with my custom foot beds dropped in.
Is this procedure likely to change how a foot works within a boot? and and are there any obvious foreseeable issues?