supine shoulder external rotation at 90 degrees abduction with elbow supported, rotating arm toward head and back.
Lie on the back with feet on the floor and knees bend, elevate the arm 90 by the side and bend the elbow to 90 degrees such that elbow resting on towel with hand pointing towards ceiling. Rotate the arm towards head without moving the elbow position, rotate the arm back to starting position. Repeat.
Nothing here is a prescription. Your physiotherapist decides which of these are yours, and when.
