I saw a chiropractor for the first time a couple years ago after a riding accident (not serious just wanted to play it safe), and he was surprised that with all the accumulated things the x-rays showed, that I was still riding and functioning at an almost normal level. The biggest thing being my neck. He said that with as straight as my vertebrae actually are in my neck that I had to have gotten extremely bad whiplash at least once, and yet I never went in to see anyone about neck pain, nor could I think of any one incident where my neck was noticably sore the next few days. As of right now I don't need surgery, but he says that even with routine care that the wings of the vertebrae may start to rub together, and my discs might degenerate. Which of course made me go "seriously its always been my back and knees more than anything that bugged me on occasion, never my neck." Hopefully I'll get many more years of being fine, cause I really don't want to get surgery done. Scared about what the would entail, and what could possibly go wrong. Our bodies are amazing machines though, things that we think we should have noticed oftentimes our bodies mask, and everyone has a different level of pain tolerance. Things that one person may seem as small and insignificant can seriously affect someone else. I'm glad that the tendon didn't completely rupture, and you went in before anything too severe happened. Glad that they were able to schedule you for surgery for today instead of having to wait a few days/weeks. Let us know how you are doing, and sorry for the novel lol.