Right Knee twinged a little Thursday morning. By 10 pm, it was a swollen nightmare that painkillers didnt take the edge off. When it got light, i limped to my car, screamed as i got in as knee didnt bend and drove 90 miles to an Emergency room. Drove with Left foot and cruise control as right leg out of commission. Out of mind with pain when i got to ER. 4mg morphine and two needle pokes to drain it. 9 hrs. All tests negative .... no arthritis, no trauma, no infection. Possibly pseudo gout. Waiting for lab results to see if calcium crystals in knee. Usually goes away and doesnt reoccur except if parathyroid problem. Not a diet thing like gout. The morphine was blessed relief. Able to limp now with cane.