Forearm Rotation

Strengthens the muscles that turn the palm up and down.

Forearm Rotation exercise illustration

What it helps

Strengthens the muscles that rotate the forearm — the motion behind turning a key, a doorknob, or a screwdriver.

How to do it

  1. Tuck your elbow in at your side, bent to 90 degrees, and hold a hammer by the end of its handle.
  2. Slowly rotate your forearm to turn the palm up, then down, through a comfortable range.
  3. The hammer head swings from one side to the other as you turn — that arc is the whole movement.
  4. Keep the elbow pinned to your side throughout.

Tips

  • Holding the hammer toward the head end adds gentle resistance — slide your grip to adjust.
  • Keep the elbow still; only the forearm rotates.
  • No hammer? A light hand weight works the same way.

Commonly done as 2–3 sets of 10–12 each way, most days.

Where this appears in recovery

Forearm Rotation is part of 57 recovery programs, most often at the wrist motion (weeks 2–6), strength building (weeks 6–12) and regaining motion (weeks 4–8) stages, among others. Each program shows how it fits alongside the other movements:

All exercise guides · Condition guides · Recovery education

These are general exercise guides, not a personal prescription. The repetitions and frequency shown are what's commonly used — your own surgeon or therapist may advise something different, and their guidance comes first.