Woodys Ligament surgery

Recently, my dog Woody tore his cruciate ligament in his left leg. He took a misstep on a flight of stairs, and due to his older age, his ligament completely tore from the bone. We took him to the vet, and the vet stated that the ligament is completely severed and torn. We were also told that Woody will probably be lame for the rest of his life, and he's probably gonna develop arthritis. Woody really likes to run around and is super energetic despite his age. This has just completely taken that away from him, and he can't really do anything but lay there and rest.

This surgery will let Woody return to himself again and enjoy running and playing again. If we can't get his surgery done for him, his other leg is most likely going to be injured as well due to him placing his weight and straining that leg. His right leg is already a bit injured, but this is due to his older age and the strain he is putting on it. If possible, we could really use the help. Any amount would help and be greatly appreciated!