OK folks... headed into get my second shoulder worked on within 18 months.  My physical therapist does not want me to strain the shoulder that is hurt (I am doing pre-op PT).  So that I don't turn into Jabba the Hut while I am out of commission, what core exercises can I do so as not to aggrevate the rotator cuff?

 

TIA 

Anything with you on your back should generally be fine. The Leg Raise (regular and Oblique), the V-Sit, Supine Bicycle, and the Reverse (Stick) Crunch are all shown in the video section.

 http://www.fitnessanywhere.com/resources/exercisesdb.php

You can do a lot of the exercises with just one arm - make the adjustment for single handle workouts.  The exercises that are arms are basically for support - balance lunge, squats, etc.

 Have Fun.