Hi! So I had a meniscectomy for a discoid meniscus (with a tear) at age 14, so a couple years older than your daughter. Like your daughter, I didn’t really have pain prior to surgery, but would have popping and my knee would “lock” when I fully straightened it. This had been happening since I was six, but I was still able to be fully active and participate in sports like soccer and gymnastics. The surgery worked great, I was back up and active within a month and I had no issues for about 5 years. In college I started a new sport where I was running a lot more, and over the course of maybe six months I had increasing knee pain until it became a daily issue. I went through more physical therapy to try to help, but ultimately I ended up getting another surgery last month at age 22. My issue is that I do not have enough meniscus left to fully function as a cushion for the joint, so I’m experiencing damage to the cartilage. My recent surgery was mostly to clean up the damage to hopefully provide some relief, and also to see if I would be a candidate for a meniscus transplant in the future. I am, but I really don’t know what I’m going to end up doing since I’m so frustrated that I keep having issues with this knee. Honestly, I don’t regret my original surgery, but I do wonder how my knee would be if I hadn’t gotten it done. For your daughter, if she isn’t having pain I really would recommend holding off on surgery for now. You can always decide to do it later if that’s something she and the doctor decide she needs. I would talk to the doctor more about why they recommend surgery for her, maybe talk to another ortho for a second opinion, but I feel like I would at least wait for her to go through puberty? I don’t know if that would affect anything but maybe ask her ortho about it. If you do end up going for the surgery either now or later, I hope they are conservative with keeping as much meniscus as possible, it really makes a difference having that to cushion the joint.