What is an SI

I've had a back ache for some time now. Over the last couple of weeks I've felt it getting worse. I workout 3 to 4 times a week. It takes me about 20 minutes for the back to get loose. I got up for work Monday morning and it felt funny. after driving 40 minutes to work I was having trouble standing straight. As the day went on I started to feel a burning sensation in my lower left back/buttocks area. I couldn't walk straight up and was bent over. I decided to visit a Chiropractor down the street. I was about 1 hour from home. He tells me that I have an SI. It's now Tuesday night and I still can't walk. My muscles in my left are twitching and most positions are uncomfortable. Burning in my left buttocks, slight numbness in foot and calf aches. I've been stretching hip and icing all day. I plan on going to a doctor tomorrow if it's not better. Can someone help me with this. Mark

[MInute Maid]

So, what did the doc say?  Sounds a bit like sciatica to me. Interested to hear the diagnosis as once or twice this has happened to me and I have assumed it was from sitting too long at the computer!

[nuggetone]

I have 2 herniated disc at L5-S1 and L4 At first 2 doctors xrayed me told me it was my sciatica nerve and gave me meds which I couldnt take at work. (pain pills) They gave me steroid shots, antiinflamitory shots and pain shot none helped.  Even ER dr. said same thing thanks to another Dr. doing a MRI which showed herniation and other problems which my systems were that of what you are saying.  I will be having surgery in the next week.  Let me know if I can help.

[blueskygirl]

SI is sacro iliac joint. SI dysfunction can mimic sciatica.