
seated trunk rotation with ball squeezed between ankles and arms extended, alternating sides for core control.
Sit with legs straight forward, place a swiss ball between the ankles and arms elevated to 90 degrees by the side. Press the ball between ankles and twist the trunk to one direction with arm moving in same direction. Untwist to starting position and repeat alternative sides.
Nothing here is a prescription. Your physiotherapist decides which of these are yours, and when.