Christmas evening 2008 I feel a sudden pain lower back right side. All of sudden the paid is running down to my knee. I thought I was going to die. I felt fire coming out of my knee. I was not able to walk, sit or move. I was rush to the emergency room where I was give a shot for pain relief and sent home to see an Ortho specialist. I have been to a doctor. I have been given two spinal shots. I have 75% relief to my back but the knee pain is killing me. My knee is not swollen, or looks different from my other knee but my knee gives out when I walk. The pain medicine is no longer working. The doctor keeps telling me that my back caused my knee pain. Anyone out there with my problem!!! Please help. I am very depressed and in alot of pain.