I was perusing the Internet and find this link, it explains the thecal sac but there is also some great advice in general. I like the advice on dealing with DR's including neurosurgeon and orthopedic surgeon. I hope this helps people. God Bless, Joe
Post edited to remove URL. Even though this was not solicitation, the information contained at the URL was information that is readily available with more detail right here at Spine-Health. There really seems to be no value in pointing to a site that has the exact information contained here
Ron DiLauro, Spine-Health System Administrator 03/23/12
ACDF C5-6 July 10, 2012 with plate and screws.