Wrist and Hand, Phase 3 · Exercise 4 of 4 WH-3 #4
Radial and Ulnar Deviation with Weight
Strengthen side-to-side wrist motion
Demonstration video: Ulnar & Radial Deviation - Hammer (Dr. Christy Lee). Follow the steps on this page if the video differs.
Why it helps
Most wrist exercises only work up-and-down motion. Side-to-side motion (toward the thumb and toward the pinky) is just as important and is often stiff after injury. This exercise strengthens those side-to-side muscles.
How to do it
- Radial deviation: sit with your forearm on a table, THUMB SIDE up (like shaking hands), hand off the edge. Hold the hammer by the handle with the heavy end pointing UP.
- Slowly tip the heavy end forward and down a little, then lift it back UP by tilting your wrist toward the THUMB side. Do 10.
- Ulnar deviation: stand with your arm hanging straight at your side. Hold the hammer by the handle with the heavy end pointing BEHIND you.
- Slowly lift the heavy end up and back by tilting your wrist toward the PINKY side. Slowly lower. Do 10.
- Move slow in both directions. Keep your elbow still.
Too hard? Try this
Hold the hammer closer to the heavy end (shorter lever). Or use a screwdriver instead. Or do 6 reps.
Too easy? Try this
Hold the hammer near the END of the handle (longer lever). Or hold the top position for 2 seconds.
Common mistakes
- You let your forearm lift off the table (radial).
- You swing your arm or bend your elbow to lift the weight.
- You move too fast.
You should feel
- Work in the side of the wrist and forearm.
- Smooth, controlled motion in both directions.
You should not feel
- Sharp pain on either side of the wrist.
- Clicking or popping with the side-to-side motion.
- Cramping in the hand.
Stop right away if
- Sharp wrist pain on either side.
- Wrist clicking, locking, or popping.
- Dropping the hammer due to weakness.
If you are one of our current patients, call the clinic and inform your provider right away, or seek emergency care right away. For a life-threatening emergency, call 911.
Research behind this program
- Reid SA, Andersen JM, Vicenzino B. J Physiother, 2020. PMID 32291223
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