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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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