I had my Nano Knee replacement on April 8, 2025 & on June 8th, 2025 I was able to fly to Croatia & the Balkans . 2 - 16 hr. flights. Exactly 2 mo. afterwards, I climbed hundreds & hundreds of steep stone steeps (1080 steps) around Dubrovnik & walked 4-6 miles every day. Plus, I was able to do all of the tours & physically challenging climbing & walks during the entire 21 day trip. I had a 128 flexion only after 5 weeks & could get my entire leg flat. Most people could never do that with a traditional TNR. The only real pain that I had was at night when I had done too much...I had to buy an ice machine in order to sleep. But after 2 weeks, I could sleep the entire night. MY PT guy said that I had had the best recovery that he had ever seen. I was his 1st Nano Knee patient. It is not a piece of cake & not pain free. However, much better that a traditional TNR. I had a Traditional replacement on my other knee 11 yrs. ago & had a great outcome. However, I will never forget the pain & recovery that I went thru. There is no easy TNR...however the Nano knee is much better! As patient...you still have to do the work to get good results. I only used a walker for 1 day!