OMG Linny it's funny you say it's what causes the pain in the hips and back. My siatica has been killing me lately, getting to the point where it hurts to sit, stand or do anything. I'm thinking about going to a chiropractor, but might wait until my hospital app. on friday. The cramping in my hips though, does really hurt when it happens, it's like the cramps you get in muscles where you go all stiff, but in my hip joint. And the back pain has only started in the last two weeks or so, about two to three weeks after the cramping started. Have you been to the phsio yet?