Our GSD was diagnosed with panosteitis around the age of 13 months - she is 2 years now, with no signs of the problems for the last 6 months. The problem is quite common with the GSD from what my vet said, and has a good prognosis. I don't know if this has ever been seen in the CSV.
Here is a website with some information on the disease:
http://www.dogstuff.info/panosteitis_lanting.html