My girl had a partial tear last October. We did eight weeks of complete crate rest during the day while I was at work, She had free roam of the house at night when I was home. No walking except to go potty, than right back into the house and no stairs. She was not allowed to jump on the furniture or bed. After eight weeks she was allowed to slowly get back into her routine of walks, but no running for another four weeks. It seemed forever but she healed very well and her knee is as good as new. And we did not have to have surgery.
