Hypothenar eminence
Encyclopedia
Hypothenar refers to a group of three muscles of the palm
that control the motion of the little finger
.
The three muscles are:
The intrinsic muscles of hand can be remembered using the mnemonic
, "A OF A OF A" for, Abductor pollicis brevis, Opponens pollicis, Flexor pollicis brevis, (thenar muscles)Adductor pollicis, Opponens digiti minimi, Flexor digiti minimi, Abductor digiti minimi (Hypothenar muscles).
, which supplies the three hypothenar muscles.
Hypothenar hammer syndrome is a vascular occlusion of this region.
Hand
A hand is a prehensile, multi-fingered extremity located at the end of an arm or forelimb of primates such as humans, chimpanzees, monkeys, and lemurs...
that control the motion 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...
.
The three muscles are:
- Abductor digiti minimi
- Flexor digiti minimi brevisFlexor digiti minimi brevis (hand)For the muscle of the foot, see Flexor digiti quinti brevis muscle The flexor digiti minimi brevis is a muscle in the hand that flexes the little finger...
- Opponens digiti minimi
Muscles
The muscles of hypothenar eminence are from lateral to medial:- Opponens digiti minimi
- Flexor digiti minimi
- Abductor digiti minimi
The intrinsic muscles of hand can be remembered using the mnemonic
Mnemonic
A mnemonic , or mnemonic device, is any learning technique that aids memory. To improve long term memory, mnemonic systems are used to make memorization easier. Commonly encountered mnemonics are often verbal, such as a very short poem or a special word used to help a person remember something,...
, "A OF A OF A" for, Abductor pollicis brevis, Opponens pollicis, Flexor pollicis brevis, (thenar muscles)Adductor pollicis, Opponens digiti minimi, Flexor digiti minimi, Abductor digiti minimi (Hypothenar muscles).
Disorders
"Hypothenar atrophy" is associated with the lesion of the ulnar nerveUlnar nerve
In human anatomy, the ulnar nerve is a nerve which runs near the ulna bone. The ulnar collateral ligament of elbow joint is in relation with the ulnar nerve. The nerve is the largest unprotected nerve in the human body , so injury is common...
, which supplies the three hypothenar muscles.
Hypothenar hammer syndrome is a vascular occlusion of this region.