My husband has suffered for over a year with intense pain upon walking or standing. He has had MRIS,Xrays, etc. no definitive diagnosis. Symptoms are intense pain in back, radiating to hip, to front/side of leg to knee with tingling on the front of his leg and to his feet.When the pain hits he says it is like his hip just gives away and the pain is unbearable. He has had injections for the pain (back), made it worse. He had spinal surgery in 1993(lower spine)and has had trouble off and on with back pain but not like this.Dr.now says may be periformis syndrome, Rx excercise, no help. We are desperate. What tests should we insist on, could it be artery disease or something like that? Would muscle relaxants help? he is now on hydrocodone and 800 mgs of ibuprofen 3x a day. Can you point us in another direction? Is sciatic pain only in the BACK of the leg or can it be in the front like his? thank you.