A forearm muscle strain is a partial or complete tear of the small fibers of the forearm muscles. Forearm muscles allow you to extend and flex your wrist and fingers.

It is a common injury in sports. It is also common in people who work in jobs with repetitive keyboard motions. Treatment depends on the severity of the strain.

Muscles of the Hand and Forearm
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A forearm muscle strain is caused by:

  • Stretching the forearm muscles beyond the amount of tension they can withstand
  • Suddenly putting stress on the forearm muscles when they are not ready for stress
  • Overusing the forearm muscles over time
  • Getting a direct blow to the forearm muscles