Overview
This exercise trains the forearm to rotate palm-up and palm-down while the elbow stays close to the body. It can be used unloaded for mobility or with a light off-centre object for strength.
How to Do It
- Sit or stand with the elbow bent to 90 degrees and tucked against your side.
- Begin with the thumb pointing upward.
- Slowly turn the palm toward the ceiling, then toward the floor.
- Keep the upper arm still and move only through a comfortable range.
- Start with 10 slow rotations; add a light hammer only when unloaded motion is easy.
What You Should Feel
Expect gentle forearm muscle work and a comfortable elbow rotation. Do not force through a hard block, sharp pain or catching.
Common Mistakes
- Letting the elbow drift away from the side
- Rotating the whole shoulder and trunk
- Gripping the weight too tightly
- Holding too far from the centre before control is established
Progression
Move the hand slightly farther from the centre of a light hammer to increase leverage, then add repetitions before choosing a heavier object.
References
- Newcastle Hospitals NHS Foundation Trust. "Tennis Elbow." Elbow flexion-extension and pronation-supination guidance. https://www.newcastle-hospitals.nhs.uk/services/newcastle-occupational-health-service/information-for-staff/physiotherapy/self-help-leaflets/tennis-elbow/
This is general education. Follow specific restrictions after fracture, dislocation, tendon repair or surgery.

