If you have not aready do so I would also suggest the Canine Intervertebral Disk Disease Prepared for The Dachshund Club of America, Inc. by Patricia J. Luttgen, DVM, MS Diplomate, American College ofI thought I would share it with you.
Veterinary Internal Medicine, Specialty of Neurology. Denver, Colorado
FWIW dachshunds have the highest rate of problem with IVDD from the link above
Analysis of the frequency of occurrence of disk disease within particular breeds shows that standard and miniature dachshunds are at the highest risk of all dog breeds followed by Pekingese. Approximately one in every four dachshunds will have some degree of disk related problems in their lifetimes. The age of incidence for chondrodystrophoid breeds is highest between three and seven years, as opposed to eight to ten years for nonchondrodystrophoid breeds.[/b]