S i joint fusion results/experiences

Hi, im looking for anyones experiences with post SI joint fusion. I had bi lateral SI fusion 12 mths ago, 6 months after which i started getting sporadic knee pain, and now at 12 mths i have a chronic tear in my left adductor/groin. I didnt have these issues prior to surgery, and in my case SIJ disfunction was not the cause of my pain.

Does any1 have similar experiences, or any 'new' pain after SI surgery? Or can any1 point me to threads/websites or info on post si surgery outcomes - i cant find anything on the subject..

Thanks