Lumbricals of the hand

Lumbricals of the hand
The muscles of the left hand. Palmar surface. (first lumbricalis labeled at bottom right of muscular group)
Details
OriginFlexor digitorum profundus
InsertionExtensor expansion
ArterySuperficial palmar arch, common palmar digital arteries, deep palmar arch, dorsal digital artery
NerveThird and fourth deep branch of ulnar nerve, first and second median nerve
ActionsFlex metacarpophalangeal joints, extend interphalangeal joints
Identifiers
Latinmusculi lumbricales manus
TA98A04.6.02.065
TA22532
FMA37385
Anatomical terms of muscle

The lumbricals are intrinsic muscles of the hand that flex the metacarpophalangeal joints,[1] and extend the interphalangeal joints.[1][2]

The lumbrical muscles of the foot also have a similar action, though they are of less clinical concern.

  1. ^ a b Gosling JA, Harris PF, Humpherson JR, Whitmore I, Willan PL (2008). Human Anatomy: Color Atlas and Textbook (5th ed.). Philadelphia: Mosby. ISBN 978-0-7234-3451-1. p. 97
  2. ^ Bilge O, Pinar Y, Ozer MA, Govsa F (October 2007). "The vascular anatomy of the lumbrical muscles in the hand". Journal of Plastic, Reconstructive & Aesthetic Surgery. 60 (10): 1120–6. doi:10.1016/j.bjps.2006.06.023. PMID 17825776.