Thanks for writing in,
Of course the best thing to do would be to bring Caesar to the vet so they can examine him, the will likely do xrays to looks for any joint effusion, fractured bones, or arthritis. THey will then place him on an anti-inflammatory such as Rimadyl and likely an additional pain medication. It is very important that you keep him cage rested and only let out to go to the bathroom, on a leash. He should be crated for atleast 2 weeks to allow inflammation to subside. If this isn't possible at the moment, then I would suggest you do the cage rest and ice this elbow a few times per day. you can give him buffered aspirin at a dose of 5mg/pound twice daily, but ONLY if you are not able to take him to a vet in the next few days, and he is not currently on any other medications or has any blood problems. Give this with food, and discontinue if any vomiting or dark colored stool occur. I hope this helps give you some direction with your big guy! Take care and let me know if you have any further questions.
Dog Veterinarian
Veterinarian, Dog/Cat Veterinarian