I had a 2 level at L4/L5 and L5/S1 in October, 2002. I was asked to participate for 2 years. I had 2 weeks, 6 weeks, 12 weeks, 6 months, 12 months, 18 months and 24 months. I just recently had my 24 month and they asked me to participate for at least another year. I just had 2 level C5/C6 and a C6/C7 prodisc implants put in my neck in Germany on Wednesday the 12th of January, 2005. The German doctor got my email address and also wants me to participate in answering the questionaires for them too. So far I am doing great and it really isn't that big of a hassle to participate.
Linda
l.roberts@comcast.net