Synonyms: little finger extensor, extensor digiti quinti proprius muscle
German: Musculus extensor digiti minimi
The extensor digiti minimi muscle has its origin at the lateral epicondyle of the humerus, medial to the extensor digitorum muscle. Moreover, it has surfaces of origin at the septa that separate it from the neighboring muscles.
The muscle passes almost in the middle of the dorsal side of the forearm and ends in a flat tendon that passes further on to the wrist. The tendon reaches the back of the hand below the extensor retinaculum in its own tendon sheath and end at the base of the 5th finger. There, it unites with the dorsal aponeurosis of the 5th finger and inserts at its middle and end phalanx (medial and distal phalanges).
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