Flexor Carpi Ulnaris - Muscle Physiology & Functional Anatomy

 

Flexor Carpi Ulnaris Muscle

Anatomy

 

Origin:

  • Humeral head: Common flexor origin of medial epicondyle.

  • Ulnar head: Aponeurosis from medial olecranon & upper three quarters subcutaneous border of ulna

Insertion

  • Pisiform, hook of hamate, base of 5th metacarpal via pisohamate & pisometacarpal ligaments



Major Artery:

  • Ulnar artery

 

Neural Innervation:

  • Ulnar nerve (C8, T1) (with some C7 by communication from lateral cord)

 

Trigger Points: 

Trigger Points of the Flexor Carpi Ulnaris

 

Physiology

 

Concentric Functions:

  • Flexes and adducts wrist.

  • Fixes pisiform during action of hypothenar muscles

Eccentric Functions:


Isometric Function:


Related Muscles


Antagonist:


Exercises:

 

 


More Images of the Flexor Carpi Ulnaris Muscle

Palpating the Flexor Carpi Ulnaris

Palpating the Flexor Carpi Ulnaris


More Information about the Flexor Carpi Ulnaris Muscle

The flexor carpi ulnaris muscle works in a muscle synergy with the other forearm flexors.  Ulnar entrapment by the aponeurosis of the 2 heads of the flexor carpi ulnaris muscle can sometimes be the cause of cubital tunnel syndrome.

 

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