"When the finger flexor muscles contract to grab something, these muscles will also flex the wrist.  The wrist flexion is not desired and will actually weaken the grip.  So the wrist extensors must contract to offset/negate the wrist flexion.  Traditional efforts to resolve the symptoms are directed at the elbow, but practitioners of Applied Functional Science also will recognize, evaluate, and treat dysfunction in other locations that are negatively impacting the functional activity."