I tore mine in a bike accident about 15 years ago. Therapy and when that ended (4 weeks I believe--3 times a week) I went back to swimming. At first it was really hard, as my am extension was difficult at best. Doing freestyle, my right arm would go into the water around 3 o'clock. I was in the slow lane, but it really helped, as it forces the range of motion. Gradually I got the arm back to going in at 12 o'clock. The swimming made all the difference in the world. Note that before the accident I was swimming regularly 3 times a week-- about 8000 meters per week. I rarely swim now, but would go back to it in a heartbeat if I had the motion issues again.
train safe-