Therapeutic exercise
Eccentric Wrist Supination with a Hammer
Rotational eccentric loading of the supinator using a hammer as an asymmetric weight. In radial tunnel syndrome, supinator remodeling reduces neural compression on the deep radial nerve — complements active release with dynamic loading.
How to perform
- Starting position. Sit with the forearm supported on a table and the hand off the edge, palm facing down (pronation).
- Step 2. Hold a hammer by the end of the handle, with the head far from the hand.
- Step 3. With the contralateral hand, assist forearm rotation into maximum supination (palm up, hammer head to the side).
- Step 4. Release the assistance and lower the hammer slowly over 4–5 seconds, returning to pronation — this is the isolated eccentric phase of the supinator.
- Return. Use the contralateral hand again to return to supination and repeat. Load is dosed by the distance from the hand to the hammer head — start close, increase progressively.
When not to perform
- Radial tunnel syndrome in an acute neurological phase
- Lateral epicondylitis in an acute reactive phase
- Recent radius or ulna fracture
- Recent elbow or forearm surgery
- Acute elbow joint pain without diagnosis
- Rheumatoid arthritis flare of the elbow
Medical disclaimer. These exercises are presented for informational purposes only. Always consult your physician before starting any exercise program, especially in case of acute pain, recent injury, or underlying clinical condition.
Related Exercises
Banded Forearm Supination
Isolated strengthening of the supinator and biceps brachii through forearm rotation against elastic resistance. Useful in the combined treatment of bicipital tendinopathy and lateral epicondylitis — corrects imbalances between pronators and supinators.
Active Supinator Release
Myofascial release of the supinator muscle combined with active pronation-supination movement. Specific for radial tunnel syndrome (compression of the deep branch of the radial nerve at the Arcade of Frohse) — releases the mechanical compression that generates the pain.
Radial Nerve Glide (Flossing)
Specific neural mobilization of the radial nerve along its path through the elbow and forearm. Indicated when there is a neurogenic component associated with lateral epicondylitis or radial-tunnel syndrome — pain radiates through the common extensor of the fingers, frequently masking the primary diagnosis.