Hi I am a 61 year old physically fit man who had successful disc replacement surgery in 2008. It was the best thing I ever did.
I had a motorcycle accident in 2012 and had no complications to the disc ( did break my collar bone ). As an alternative to spinal fusion I highly recommend this alternative to spinal fusion but remember that the only way you can do this is if there is only one disc to replace. The only complication I had was leg pain for a year after the surgery caused by the stretching of nerves due to being taller by 1/2 of an inch. I had to wait a year for the nerve to regenerate before it went away.