I used to be a regular on the PN board, but this post did catch my eye. I've had SI joint problems for over 30 years. When it is at it's worst...and it is right now...I get tingling around my kneecap...outer thigh, occasional sharp groin pain...and I sometimes wonder if the toe pain I feel has been due to the SI joint dysfunction. I didn't think it could skip my leg and go right to the bottom of my toes. I ended up with surgery on both feet...suspected neuromas....and who knows....it may have been the back all along. Right now...it hurts more than it has ever. Just icing and taking ibuprofen. I know that arching my back can make it worse.