Thumb Adduction Abduction

Raise your affected hand with your palm facing sideways.

Keeping your fingers and thumb close to each other, point them up towards the ceiling.

Move your thumb away from the rest of your fingers in a plane perpendicular to your palm (a movement known as abduction).

Hold your thumb in abduction for a count of 6.

Then slowly return to the starting position, with your thumb resting against your index/pointing finger (a movement known as adduction).

Aim for at least 8 to 12 reps.

Switch sides, and repeat.