Hypothenar eminence
The hypothenar muscles are a group of three muscles of the palm that control the motion of the little finger.
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Carpal tunnel and thenar and hypothenar eminences
Hypothenar eminence | |
---|---|
![]() The mucous sheaths of the tendons on the front of the wrist and digits. (Hypothenar eminence labeled at center right.) | |
![]() Transverse section across the wrist and digits. (Muscles of little finger labeled at upper right.) | |
Details | |
Insertion | 5th metacarpal and proximal phalynx |
Artery | ulnar artery |
Nerve | deep branch of ulnar nerve |
Actions | control movement of the 5th digit |
Identifiers | |
Latin | eminentia hypothenaris |
TA | A01.2.07.024 |
FMA | 61523 |
Anatomical terms of muscle |
The three muscles are:[1]
- Abductor digiti minimi
- Flexor digiti minimi brevis
- Opponens digiti minimi
Structure
The muscles of hypothenar eminence are from medial to lateral:
- Opponens digiti minimi
- Flexor digiti minimi brevis
- Abductor digiti minimi
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 (the three thenar muscles), Adductor pollicis, and the three hypothenar muscles, Opponens digiti minimi, Flexor digiti minimi brevis, Abductor digiti minimi.[2]
Clinical significance
"Hypothenar atrophy" is associated with the lesion of the ulnar nerve, which supplies the three hypothenar muscles.
Hypothenar hammer syndrome is a vascular occlusion of this region.[3]
gollark: Also against.
gollark: i̶ ͠w̍ảt̓c̆h̨ȅd̎ ͪt͋h҉eͤ ̫a̔c̸t̥u̼àl̰ ̕r̩e̯w̠ịnͬd̵ ̒a̲n͡d̠ ͮḓi̋d̕ ̇n͗òtͧ ͣg̕ḛt͢ ͠h̰ów̓ ̂i̒t̮ ̄m͠a̤n̡åg̨e͌d̀ ̥tͩo̘ ͗g̎e̠t̑ ͠t̲h̨ät͕ ̳m̟uͧc͢h̍ ̉d͋iͩsͯl̝i̔k̤e̺s̀.̔ ̳i͐ ̷dͫǐs͕l͒ḯk͙e̊d̀ ͦi͜tͪ ͙b̒e̽c͒ḁuͪs̸e̽ ̇i̍t̞ ̸w͆aͧš ̔c̄r̴ȉn̿g͉eͮy͠ ̻a̒n͜dͦ ̽o̫b̪nͨo͑x̀ỉōǘs͕ ͥb̨u̖t̳ ͊p̒e̍o̧p̆ĺe͜ ͦṃuͫst have liked it because mainstream people like fortnite and other cringey stuff in this video.many comm҉ents say "i do not kn҉ow any of these gu҉ys" but i think featuring creators from all over the world is quite a good idea (executed awfully). if all rewinds had always the same people it would not be interesting at all.and guess what҉ is worse and more cringey than the actual rewind? the ҉pewdiepie one!
gollark: Because you're STOOPID.
gollark: WHY would you do that?
gollark: <@341618941317349376> `[],0,"0"`, what's your solution?
See also
- Thenar eminence
- Palmaris brevis
References
- "Intrinsic Muscles of the Hand - Wheeless' Textbook of Orthopaedics". Retrieved 2008-01-16.
- "Medical mnemonics". LifeHugger. Archived from the original on 2011-07-13. Retrieved 2009-12-19.
- Cooke RA (2003). "Hypothenar hammer syndrome: a discrete syndrome to be distinguished from hand-arm vibration syndrome". Occup Med (Lond). 53 (5): 320–4. doi:10.1093/occmed/kqg071. PMID 12890831.
External links
- EatonHand mus-083
- Anatomy figure: 08:04-07 at Human Anatomy Online, SUNY Downstate Medical Center
- Slides
- lesson5mus&tendonsofhand at The Anatomy Lesson by Wesley Norman (Georgetown University)
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