Help Rosco Run Again

Hello, I am trying to raise money for surgery for my little guy. He tore his CCL (Cranial crucial ligament) the vet wants to cut open his back right leg and put in a plastic piece to put his leg back together. I fell horrible because he is in so much pain but the surgery is going to be really expensive and I can't afford it. Yesterday I had to take him in to get x-rays and pain/inflammation medicine and that cost me over $300.00! Anything you can do to help would immensely!