Mouse Arm — Forearm Pain in Office Workers
Table of Contents
Eight hours at a desk — your elbow's warning signs
Elbow and forearm pain is very common in office workers. Clicking and dragging a mouse, as well as typing on a keyboard, continuously tense the forearm muscles. When this state is repeated for several hours every day, pain can spread across the lateral or medial tendon attachments of the elbow as well as the entire forearm muscle belly.
Characteristics of mouse arm
Unlike traditional tennis elbow or golfer's elbow, elbow pain caused by mouse use results from low-intensity but long-lasting isometric contraction. The problem is not strong force, but weak force sustained for a long time.
- Mouse-side arm: Clicking and scrolling accumulate fatigue in the forearm extensors.
- Keyboard-side arm: Finger typing keeps the forearm flexors continuously tensed.
- Generalized forearm muscle fatigue: Not only the tendon attachments but the forearm muscles themselves become tight and shortened.
- Neck and shoulder involvement: Poor posture also brings on cervical and trapezius pain.
Ergonomic setup is the start of treatment
Before treatment, the work environment must be assessed. If the mouse is too high or the elbow is unsupported in the air, forearm fatigue is amplified.
- Elbow angle: Maintain 90–110 degrees, with the forearm resting naturally on the desk.
- Mouse: Use a vertical mouse to reduce forearm pronation strain.
- Keyboard: Use a wrist rest, but keep the wrists floating while actively typing.
Acupuncture, needle-knife therapy, and stretching
Acupuncture relieves tension and trigger points in the forearm muscles, while needle-knife therapy releases fascial adhesions. Making a 10-minute stretching break after every 50 minutes of work effectively prevents recurrence. A simple routine of fully flexing and extending the wrist, holding each position for 15 seconds, can substantially reduce forearm muscle fatigue.