Extensor Digiti Minimi
Extensor Digiti Minimi is a slender muscle of the extensor compartment of forearm. It is also known as Extensor Digiti Quinti Proprius. It is situated adjacent to Extensor Digitorum Communis and is usually connected to it.
read moreDeltoid Muscle Biceps Brachii Brachioradialis Muscle Palmaris Longus Muscle Extensor Carpi Radialis Longus Muscle Extensor RetinaculumDorsal Interossei Muscle Extensor Carpi Ulnaris Muscle Extensor Digitorum Communis Muscle Extensor Carpi Radialis Brevis Muscle Triceps Brachii Muscle Biceps Brachii Muscle Posterior Brachialis Muscle
Extensor Digiti Minimi
ATTACHMENTS
- Origin is from Lateral Epicondyle of Humerus (lateral side of elbow).
- Extensor Digiti Minimi runs on posterior aspect of forearm and hand till first bone of pinky finger (proximal phalanx of 5th finger).
- Insertion is at Extensor Expansion of fifth finger (pinky finger).
BLOOD SUPPLY
Extensor Digiti Minimi receives its blood supply from Ulnar Artery via its branches. Branches supplying it from proximal to distal side are:
- Posterior Interosseous Artery
- Anterior Interosseous Artery via perforating branch
- Dorsal Carpal Arch
- Dorsal Metacarpal Arteries
- Dorsal Digital Arteries
NERVE SUPPLY
Extensor Digiti Minimi gets innervated by Radial Nerve (C7, C8).
ACTION
Extensor Digiti Minimi extends both Wrist Joint and Little Finger of hand.
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