X-Stop Interspinous Spacers?

[pkasin]

Hi All. I am looking for a bit of advice on a few spinals issues.

Background:

I had 3 Mobi-C artificial disks implanted in my cervical spine in 2007 in France, and after nearly 3 years, they have shifted, and I have subluxation (sp?) on two levels- and a lot of radicular pain in hands/neck/shoulders, etc. due to neuropathy.

I have DDD with Spinal Stenosis in my Lumbar spine. have problems pretty much at every level of my spine with DDD, although it looks like the the lower area from L4-S1 is my issue for spinal stenosis.

Questions:
Cervical: Has anyone had a 2nd placement of artificial disks in their cervical spine? Any results? Or if not, has anyone had them removed? What was done?

For my Lumbar spine, I have found a new surgeon who has said I am a candidate for X-Stop implantation on two levels. I have heard about a high failure rate of this device, but I understand in the U.S. it's the only game in town now. I am willing to travel overseas if necessary, as probably we all would be if the pain could be relieved...

Any ideas on any of these situations?

Thanks.

Paul