I too had the same reaction from my surgeon and his team, not our problem, even my GP said you cannot be right, I claimed I had a lot more leg immediately after the surgery, but instead of checking they left me to cope on my own.
Weeks later after making a real nuisance of myself with my local GP I begged him by me saying to him lets get this sorted out once and for all with an x-ray, and then I will shut up if I am wrong, and I will stop nagging you.
the x-ray is called a LONG LEG X-RAY, from above the waist down to the floor, and then they measure each and every bone.
Even the x-ray tech, said come and look at this, he was amazed, and gave me the measurement's then and there, 22mm or 3/4 inch difference.
Complicated by a longer leg below the knee on the same side naturally, but because I had grown with it my entire life, unaware, it did not have to be adjusted for, but should have been taken into consideration and identified before my surgery, not added to.
I wear a shoe lift insert that lifts my opposite foot about 10mm which is enough for me to relieve back pain, runners have been adjusted by same by adding another layer of sole, dress court shoes with kitten heels, at 66 you don't wear high heels anyway, left shoe down 5mm and right shoe up 5mm, has worked for me, but at $45.00AUD a pair, not cheap, I now have only about 4 pairs of shoes that I wear regularly.