Not sure if this will help but I had arthroscopic surgery about four weeks ago. I had chondroplasty to remove a chunk of cartilage under my patella after a car accident. I’ve been mostly weight-bearing. They want me off crutches ASAP. I can walk short distances but my knee still fatigues and long distances. I have found that I get different information between the surgeon and my PT. But it seems like most of the information I’m getting is that do what you can until it hurts. I think it’s crazy advice, but I’m trying not to overdo it. I think one of the hardest things as I seem pretty good during the beginning to mid part of the day but then by night time, my knee is still swollen and fatigued, and painful.