What is thumb adduction and abduction?

Thumb abduction/adduction

  1. With one hand, point your fingers and thumb straight up. Your wrist should be relaxed, following the line of your fingers and thumb.
  2. Pull your thumb away from your palm as far as you can. Hold that position for about 6 seconds. Then slowly move your thumb back to the starting position, with your thumb resting against your index (pointing) finger.
  3. Repeat 8 to 12 times.
  4. Switch hands, and repeat steps 1 through 3.

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