Marco, I was in the sling 4 weeks and started passive pt 4 days after surgery, 1 time/week. I'm kinda surprised your Doc. wants your arm to rest that long, I'd think that baby will be as stiff as your ski in 6 weeks. During last weeks PT visit (#4), he took my arm past 90 degrees and it took some effort and caused the most PT pain so far! Shoulda took a pain pill before that visit.