
standing trunk rotation with forward lean holding swiss ball and dumbbells, alternating sides without ball touching floor
Stand with holding a Swiss ball and dumbbell in each hand. Twist to 45 degrees to one side and lean forward, such that back is parallel to the floor without resting the ball on floor. Twist to centre and then to other side, straighten to starting position and repeat.
Nothing here is a prescription. Your physiotherapist decides which of these are yours, and when.