Thehypothenar musclesare a group of three muscles of thepalmthat control the motion of thelittle finger.
| 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 the5th digit |
| Identifiers | |
| Latin | eminentia hypothenaris |
| TA98 | A01.2.07.024 |
| TA2 | 307 |
| FMA | 61523 |
| Anatomical terms of muscle | |
The three muscles are:[1]
Structure
editThe muscles of hypothenar eminence are from medial to lateral:
The intrinsic muscles of hand can be remembered using themnemonic,"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
edit"Hypothenar atrophy" is associated with the lesion of theulnar nerve,which supplies the three hypothenar muscles.
Hypothenar hammer syndromeis a vascular occlusion of this region.[3]
See also
editReferences
edit- ^"Intrinsic Muscles of the Hand - Wheeless' Textbook of Orthopaedics".Retrieved2008-01-16.
- ^"Medical mnemonics".LifeHugger. Archived fromthe originalon 2011-07-13.Retrieved2009-12-19.
- ^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.PMID12890831.
External links
edit- EatonHandmus-083
- Anatomy figure: 08:04-07at Human Anatomy Online, SUNY Downstate Medical Center
- Slides
- lesson5mus&tendonsofhandat The Anatomy Lesson by Wesley Norman (Georgetown University)