Do you know what type of alignment correction was done? The traditional view was "mechanical alignment" which essentially drew a straight line down the leg. More recently that has been rejected as very few people actually have that type of alignment.
Now surgeons are using one of three types of alignments: kinematic, inverse kinematic and functional. I was severely valgus (knock kneed) on my surgical leg and my surgeon did a functional alignment. Now my alignment on both legs seems the same.
As part of my TKR my surgeon did a patelloplasty.