
lying on back, lift dumbbell overhead while keeping elbow supported on towel roll, then lower arm back down
Lie on the back with feet on the floor and knees bend, arms by the side with thumb pointing towards the ceiling, place a towel under the elbow. Elevate the arm overhead keeping elbow straight, lower the arm back to starting position and repeat.
Nothing here is a prescription. Your physiotherapist decides which of these are yours, and when.