Life or death situation for Blue

Blue had an infection which was treated by the PDSA. In the second week of treatment Blue became unwell and was whimpering and struggling to walk. The PDSA found a problem with Blues spine, the neck second vertebrae is twisted and out of place.
The PDSA put Blue on Tramadol and suggested he be put to sleep if we didn't have the funds for him to have a more detailed scan via a vets they could refer him too (As they don't have this type of scanner themselves) Blue is very poorly and needs the spinal surgery asap, the cost is approximately £4,500 we have been quoted by SCVS.
Blue is only 4/5 years old, we really would love everyone to help him have his operation, if we can't raise the funds we will be heartbroken to lose Blue.
He is the most soppiest, daft dog, you're ever meet, and we just want him well again.
If you need more information please ask.