I was in a car accident and ended up having massive sciatic nerve pain in my lower back spreading to my legs. Ended up seeing a "back specialist" . He said that he would test me for a specific gene and if I had it it was certain I have ankylosis spondylitis which is basically a degenerative disease that causes abnormal cartilage degradation or arthritis. So I came up as negative for the test but yet he still said I have this disease. Well I read through all the symptoms of ankylosis spondylitis like would a TSB in my trade, and found I had none of the other problems associated with it. I told him that he was wrong. He got mad and said "oh yeah? Well, go downstairs, take this paper and get an X-ray and bring it back here and I will prove it!" So I did just that and when he put it up next to the original he stood there in silence and then muttered "umm I guess maybe you may not have it because I would expect much nmore degradation. I asked him how he can tell that someone has arthritis from just an x-ray and he told me that he was looking at the distance between the bones. If they were closer together than he would assume there was less cartilage between them therefore you had arthritis. A few months later I was at the gym and met a guy who I told of my sciatic pain and he suggested I do this kind of twist kick. Well I already had some clues from my body and was trying to stretch in a twisting kind of way at my lower back but I never thought of a more forceful kick. I eventually got the motion correct and did this kick/twist with full force. My lower back made a huge pop and I felt an inch taller. Pain was instantly reduced and never had sciatic pain since then (15 years ago). What was happening was my sacroiliac joint had the bones closer together because the ligaments were so tight they were squeezing the cartilage and therefore some nerve. All I needed was a good crack and they loosened up and all was good. Stupid fuck thought he was so smart but never even considered this a possibility and wanted to prescribe some shit medication. I do much more harder and complicated diagnosing in my trade, these doctors are usually lazy hacks that don't put any effort into actually getting to the root of someone's problem.