I had a sheltie mix that tore both of her ACLs at the same time. She healed fine without surgery. However she was only 40 pounds and not very active. It might be different for a larger, more active GSD.
Lila mit der Floppy-Ohr
Teddy the Fearless
Chaz the Spaz
Pokey - you don't know what you've got 'till it's gone
Zoey - may you catch the UPS man
Auggie -may you find the peace you never had