Magic!
Today I took Laura back to the Royal National Orthopaedic Hospital (RNOH) for her one-year post-op check, all is well and she doesn't have to go back there for a year.
What I hadn't appreciated is that Laura had an S-shaped curve, the surgery was on the lower bit. Either because of that, or via some kind of magic, the upper curve has gone from about 25 degrees to 18 degrees all by itself.
I can't rate the RNOH highly enough - they've become a Foundation Trust and I've become a member.