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Hypothenar eminence
Group of three muscles of the palm
Group of three muscles of the palm
| Field | Value |
|---|---|
| Name | Hypothenar eminence |
| Latin | eminentia hypothenaris |
| Image | Gray423.png |
| Caption | The mucous sheaths of the tendons on the front of the wrist and digits. (Hypothenar eminence labeled at center right.) |
| Image2 | Carpal-Tunnel.svg |
| Caption2 | Transverse section across the wrist and digits. (Muscles of little finger labeled at upper right.) |
| Insertion | [5th metacarpal and proximal phalynx](5th-metacarpal-and-proximal-phalynx) |
| Blood | Ulnar artery |
| Nerve | Deep branch of ulnar nerve |
| Action | Control movement of the [5th digit](5th-digit) |
The hypothenar muscles are a group of three muscles of the palm that control the motion of the little finger.
The three muscles are:
- Abductor digiti minimi
- Flexor digiti minimi brevis
- Opponens digiti minimi
Structure
The muscles of hypothenar eminence are from lateral to medial:
- 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.
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.
References
References
- "Intrinsic Muscles of the Hand - Wheeless' Textbook of Orthopaedics".
- "Medical mnemonics". LifeHugger.
- Cooke RA. (2003). "Hypothenar hammer syndrome: a discrete syndrome to be distinguished from hand-arm vibration syndrome". [[Occup Med (Lond)]].
This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page.
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