Something similar just happened to my Betsy. She was on pain meds from the doc for 4 days with no improvement. After talking with Randy, I gave her Deramaxx. Within 4 hours she was up and walking like nothing happened. Before that I had to actually carry her out to go to the bathroom. She had no use of her rear leg at all and was in severe pain. Thanks to Randy, Betsy isnt hurting anymore and my vet got educated.