it is advisable to have a personalized rehabilitation program based on follow-up examinations, but we generally advise the following program.

One week box rest, then a water treadmill for 5 min per day up to 20 min per day first months ( small  increase every week) .
After 3 months pasture/paddock ( in the beginning with sedation) and treadmill.
After 6 months slight exercises till free training after 10 months.