Psoas minor muscle

Psoas minor muscle

Muscle infobox
Name = Psoas minor muscle
Latin = m. psoas minor
GraySubject = 127
GrayPage = 467


Caption = Muscles of the iliac and anterior femoral regions. (Psoas minor visible near top right.)
Origin = Side of T12+L1 and IV Disc between
Insertion = Pectineal line and iliopectineal eminence
Action = Weak trunk flexor
Blood =
Nerve = Lumbar plexusPlatzer (2004), p 234]
Antagonist = Gluteus maximus
MeshName = Psoas+Muscles
MeshNumber = A02.633.567.825
DorlandsPre = m_22
DorlandsSuf = 12550283

The psoas minor is a long, slender skeletal muscle that, when present, is placed in front of the psoas major muscle. It is absent in 40% of individuals. [Tank (2005), p 93]

Course

Psoas minor originates from the vertical fascicles inserted on the last thoracic and first lumbar vertebrae. From there, it passes down onto the medial border of the psoas major, and is inserted to the innominate line and the iliopectineal eminence. Additionally, it attaches to and stretches the deep surface of the iliac fascia and, occasionally, its lowermost fibers reaches the inguinal ligament.Bendavid (2001), p 58] Variations occur, however, and the insertion on the iliopubic eminence sometimes radiates into the iliopectineal arch.


=Additional

Notes

References

* cite book
url = http://books.google.se/books?id=ai6fOllPH44C&pg=RA1-PA58
title = Abdominal Wall Hernias: Principle and Management
first = Robert | last = Bendavid | coauthors = Abrahamson, Jack; Arregui, Maurice E.
publisher = Springer | year = 2001
isbn = 0387950044
* cite book
title = Color Atlas of Human Anatomy, Vol 1: Locomotor system
first = Werner | last = Platzer
edition = 5th | publisher = Thieme
isbn = 3-13-533305-1 | year = 2004 (ISBN for the Americas 1-58890-159-9.)
* cite book
first = Patrick W. | last = Tank
title = Grant's Dissector
publisher = Lippincott Williams & Wilkins | location = Hagerstown, MD
year = 2005 | edition = 13th ed.
isbn = 0-7817-5484-4

External links

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