Hypothenar eminence explained

Hypothenar eminence
Latin:eminentia hypothenaris
Insertion:5th metacarpal and proximal phalynx
Blood:Ulnar artery
Nerve:Deep branch of ulnar nerve
Action:Control movement of the 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:[1]

Structure

The muscles of hypothenar eminence are from medial to lateral:

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]

See also

External links

Notes and References

  1. Web site: Intrinsic Muscles of the Hand - Wheeless' Textbook of Orthopaedics . 2008-01-16 .
  2. Web site: Medical mnemonics . LifeHugger . 2009-12-19 . dead . https://archive.today/20110713204529/http://mc.lifehugger.com/moc/386/intrinsic-muscles-hand . 2011-07-13 .
  3. Cooke RA . Hypothenar hammer syndrome: a discrete syndrome to be distinguished from hand-arm vibration syndrome . . 53 . 5 . 320–4 . 2003 . 12890831 . 10.1093/occmed/kqg071. free .