Otto, there are quite a few topics that can address your question. Do study the post op forum! Here are some topics I found with the search function:
http://www.adrsupport.org/forums/f51...-studies-5741/
http://www.adrsupport.org/forums/f50...osthesis-5698/
http://www.adrsupport.org/forums/f50...-2012-a-11608/
http://www.adrsupport.org/forums/f47...c-jaclyn-9943/
http://www.adrsupport.org/forums/f51...ofusion-11329/
We were the first site on the net to focus on spinal arthroplasty, so we have 8 years of history and posts. We have a good problem: lots of information and personal stories for you to read. Try searching and browsing, you'll get up to speed quickly.
ADRSupport Community - Search Forums 
Can you find a way to be on the computer comfortable? I would imagine your sitting tolerance is not great...sorry. There is hope!