. 2015 Jun 30;15(61):172–188. doi: 10.15557/JoU.2015.0015

Tab. 6.

Fifth compartment. Anatomy review

Fifth compartment
EDQ – extensor digiti quinti propius (extensor digiti minimi) Origin: lateral epicondyle of humerus, common extensor tendon Insertion: extensor expansion at the dorsal side of the base of the proximal phalanx of 5th finger Blood supply: posterior interosseous artery Nerve: radial nerve Actions: extension of the wrist and of the little finger (at all joints) Tips and tricks: Anatomy details: common extensor tendon – attaches to the lateral epicondyle of the humerus and serves as the origin for following muscles (some of them partially): 1. Extensor carpi radialis brevis (II) 2. Extensor digitorum (IV) 3. Extensor digiti quinti propius (V) 4. Extensor carpi ulnaris (VI)

Fifth compartment

Anatomy review

EDQ – extensor digiti quinti propius (extensor digiti minimi)
Origin: lateral epicondyle of humerus, common extensor tendon
Insertion: extensor expansion at the dorsal side of the base of the proximal phalanx of 5th finger
Blood supply: posterior interosseous artery
Nerve: radial nerve
Actions: extension of the wrist and of the little finger (at all joints)
Tips and tricks:
Anatomy details: common extensor tendon – attaches to the lateral epicondyle of the humerus and serves as the origin for following muscles (some of them partially):
1. Extensor carpi radialis brevis (II)
2. Extensor digitorum (IV)
3. Extensor digiti quinti propius (V)
4. Extensor carpi ulnaris (VI)