Don’t stress it. I’ve had three knee surgeries. Cartilage is no big deal. I went in and had all the cartilage removed from my left knee. I couldn’t walk when I went in, had surgery and removed all my articulating cartilage, and walked out that afternoon. That next weekend, I was dragging a deer out of the field. Another time, I had the cartilage removed in my right knee, during college athletics, and in less than two weeks, I was back out on the field competing. I’ve only had one surgery that put me out for a while. It was when I had my right knee reconstructed. It was during my sr. year in college. I had to redshirt my sr. year.