@saeternes I did have a scan, but some googling has made me believe it was only because I had a Conformis knee replacement, and Conformis is made to mimic your natural knee in size, etc., not be an "off the shelf" knee. Because it is custom made the Conformis knee does give a better, quicker recovery and from what I have seen, greater satisfaction.
My googling also led to this site, a description of Conformis vs Makoplasty with descriptions of both. It is from an orthopedic group's but it describes the two different methods. I am sure it is biased because this group does the Conformis knee. I think either is a great improvement over traditional TKRs. https://www.orthopedicsnh.com/blogs/conformis-vs-makoplasty-total-knee-replacement/
As I said above, I am very happy with my Conformis knee, and a woman I know from my water aerobics class had Mako and she had great results with that. I think one of the most important things is to get a very highly regarded orthopedic surgeon in whom you have confidence. A less than great surgeon can result in poor results even using Conformis or Mako.