Extensor digiti minimi muscle
Encyclopedia
The extensor minimi digiti (extensor digiti quinti proprius) is a slender muscle of the forearm
, placed on the ulnar side of the Extensor digitorum communis, with which it is generally connected.
It arises from the common Extensor tendon by a thin tendinous slip, from the intermuscular septa between it and the adjacent muscles.
Its tendon runs through a compartment of the dorsal carpal ligament behind the distal radio-ulnar joint, then divides into two as it crosses the hand, and finally joins the expansion of the Extensor digitorum communis tendon on the dorsum of the first phalanx
of the little finger
.
; the tendon of insertion may not divide or may send a slip to the ring finger
.
Absence of muscle rare; fusion of the belly with the Extensor digitorum communis not uncommon.
Forearm
-See also:*Forearm flexors*Forearm muscles...
, placed on the ulnar side of the Extensor digitorum communis, with which it is generally connected.
It arises from the common Extensor tendon by a thin tendinous slip, from the intermuscular septa between it and the adjacent muscles.
Its tendon runs through a compartment of the dorsal carpal ligament behind the distal radio-ulnar joint, then divides into two as it crosses the hand, and finally joins the expansion of the Extensor digitorum communis tendon on the dorsum of the first phalanx
Phalanx bones
In anatomy, phalanx bones are those that form the fingers and toes. In primates such as humans and monkeys, the thumb and big toe have two phalanges, while the other fingers and toes consist of three. Phalanges are classified as long bones.The phalanges do not have individual names...
of the little finger
Little finger
The little finger, often called the pinky in American English, pinkie in Scottish English , or small finger in medicine, is the most ulnar and usually smallest finger of the human hand, opposite the thumb, next to the ring finger.-Muscles:There are four muscles that...
.
Variations
An additional fibrous slip from the lateral epicondyleLateral epicondyle
Lateral epicondyle can refer to:* Lateral epicondyle of the humerus * Lateral epicondyle of the femur...
; the tendon of insertion may not divide or may send a slip to the ring finger
Ring finger
The ring finger is the fourth digit of the human hand, and the second most ulnar finger, located between the middle finger and the little finger. It is also called digitus medicinalis, the fourth finger, digitus annularis, digitus quartus, or digitus IV in anatomy.- Etymology :According to László A...
.
Absence of muscle rare; fusion of the belly with the Extensor digitorum communis not uncommon.