I had both knees replaced - one in Aug 2022 and the second one in Nov 2022. I played doubles racquetball at a A/Elite level before but the knees had severe osteoarthritis and one had a lot of muscle atrophy. More over the right knee was bent inwards so needed straightening. What a blessing it has been. No question that this surgery is tough and painful but if you do your part of preparing and serious rehab you will get there. I was back on the courts 4 months after the second surgery and back to playing at a high level about 9 months after the second surgery. The biggest difference to me is the quickness especially the first step of the ground and the ability to move backwards on the court. No pain. I don't play much singles but sometimes do and notice a big difference in the amount of court I can now cover compared to before. I play recreational squash and not at a competitive level, But even with that the knees feel much better. I don't play handball. The knees I used were Smith and Nephew. Hope this helps.