As I write this, we are in week number two of rest and restricted activity because our best friend partially tore the ACL in his right leg. This happened about a year ago to his left leg so, it is true that it happens to both. The first time, our vet recommended the rest and anti-inflammatory meds along with a possible brace for his leg. We are so glad that we pursued the brace idea. His left leg is just about back to normal and if the brace for his right leg comes in soon, we may be able to salvage the final week of a three week trip to the coast. Last year we, also, bought stairs for him to get into the truck that work in the trailer as well.
http://www.mypetsbrace.com/
http://www.petloader.com/
Hope all goes well!!!