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Extensor Carpi Ulnaris
Region
Origin & Insertion
['Origin: Lateral epicondyle of humerus and ulna', 'Insertion: Base of 5th metacarpal']
Synergistic Muscles
['FCU', 'ED']
Joints
['Wrist']
Primary Actions
['Wrist extension', 'Ulnar deviation']
Nerve & Spinal Segment
Radial nerve (posterior interosseous branch)
Brachial plexus; C7–C8
Interesting
Important for wrist stabilization. [Netter’s]
Reversal of Action
Raise ulna toward fixed hand
Common Dysfunctions
Ulnar-sided wrist pain, weak ulnar deviation
How to Stretch
Flex and radially deviate wrist.
Trigger Points
How to Strengthen
Ulnar deviation resistance work.
Concentric Action
Extend and adduct wrist
Applications:
Assists in ulnar-sided wrist pain and grip power recovery
Eccentric Action
Control return from wrist extension
Isotonic Action
Wrist extension + ulnar deviation with dumbbell
Related Conditions
['Extensor tendonopathy', 'Wrist instability']
Isometric Action
Sustain wrist extension/ulnar deviation
Exercise Ideas
['Wrist roller ulnar', 'Weighted ulnar deviation', 'Band resisted hold']
Related Blogs
Images
Videos
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