Wrist flexion and extension
If this exercise causes numbness, tingling, or pain in your hand, ease off of the stretch. You should not have symptoms as you stretch. If you cannot back off enough so that you can do the exercise without symptoms, stop doing the exercise right away.
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Place your forearm on a table, with your affected hand and wrist extended beyond the table, palm down.
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Slowly bend your wrist to move your hand upward and allow your hand to close into a fist. Hold for about 6 seconds.
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Then lower your hand and allow your fingers to relax. Hold this position for about 6 seconds. You should feel a gentle stretch.
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Repeat 8 to 12 times.