Natalie,
I'm glad he was honest and straightforward with you. And I'm glad there aren't any problems with the implant. So, it looks like you are back to managing the SC.
But please do not think that things will never get better. From everything I've read, the SC does "burn out" at some point. My surgeon is pretty sure mine had burned out (after 21 years), but who knows for sure? I do think there will be a point when the SC is no longer active, and they will be able to remove all the pieces and you will be much more comfortable. I don't think either one of us will ever be "normal," but comfortable is pretty good.
I guess now it's time to focus on what can be done for the SC. Are there pieces that can be removed arthroscopically? What can they do for you in regards to pain management? At least you won't be pushing yourself unrealistically with knee exercises and PT. That alone should help reduce the inflammation.
I know you are disappointed, and you should be. You will have a period of mourning as you let go of some of your hopes. I remember being so hopeful after my previous surgery, thinking this will be it, and I will finally be pain-free. I quickly knew that was not going to be the case.
It's also very hard to be young and not be able to do all the things young people are supposed to be able to do. But, with adequate pain management and limitations, you can still have a good life and do a lot of things you want to do. We are both very lucky to have wonderful husbands and children. I really try to focus on the good things in my life and the things I can do.
I'm so sorry about this.