Quadratus Lumborum
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Description[edit|edit source]
The word quadratus comes from the Latin word "quadrus" meaning “square” while Lumborum comes from the Latin word "lumbus" for “loin.”
A thick, irregular, quadrilateral-shaped muscle sheet that lies in the posterior abdominal wall.
Anatomy[edit|edit source]
起源[edit|edit source]
内侧低矿房的一半er of 12th rib and tips of transverse processes of lumbar vertebrae[1][2]
Insertion[edit|edit source]
Iliolumbar韧带和后的内部唇iliac Crest[1][2]
Nerve Supply[1][edit|edit source]
Subcostal nerve (T12)
Iliohypogastric and Ilioinguinal nerve (both from L1)
Branches from the ventral rami (L2 and L3)
Blood Supply[3][edit|edit source]
Branches of the subcostal artery
Branches of the lumbar arteries
The lumbar branch of the iliolumbar artery
The arteria lumbalis ima from the median sacral artery.
Function[edit|edit source]
Actions[3][edit|edit source]
Quadratus Lumborum fixes the 12th rib to stabilize diaphragm attachments during inspiration
Lateral flexes the vertebral column
Extends lumbar vertebrae
it forms with the contralateralTensor fascia lataandGluteus mediusalateral myofascial slingwhich aims to maintainfrontalplane stability of the pelvis.
Functional contributions[edit|edit source]
The primary antagonist to each Quadratus Lumborum muscle is the Quadratus Lumborum muscle on the other side of the body.[4]
The muscle group is considered a postural muscle group.
It's one of the muscles that tends to be tight and overactive[5]
Trigger Point Referral Pattern[edit|edit source]
Techniques[edit|edit source]
Palpation[edit|edit source]
Related Pathologies[edit|edit source]
Dysfunction of the Lumbar structures whether degenerative, neuropathy, and/or inflammatory, may contribute to poor muscle firing and weak stabilization by the QL.[6]
Lumbar spine pathologies like bulging discs, and facet joint hypertrophy from chronic inflammation may effect nerve conduction and response to the QL and Iliopsoas resulting in poor muscle stabilization and mechanical stress from chronic contracture.[6]
Moaratty-Koehler Syndrome (MKS) is another condition related to QL dysfunction
Treatment[edit|edit source]
Resources[edit|edit source]
References[edit|edit source]
References will automatically be added here, seeadding references tutorial.
- ↑1.01.11.2Anatomy expert. 3D - Quadratus lumborum. Available from:http://www.anatomyexpert.com/app/structure/5307/(accessed from 19 April 2019)
- ↑2.02.1Keith L. , Anne M. R . Clinically Oriented Anatomy 7th edition. philidephia : Lippincott Williams & Wilkins.2017
- ↑3.03.1Radiopaedia. Quadratus lumborum. Available from:http://radiopaedia.org/articles/quadratus-lumborum(accessed 15 August 2015)
- ↑Perry D. Quadratus Lumborum Trigger Points: Masters of Low Back Pain | TriggerPointTherapist.com [Internet]. Triggerpointtherapist.com. 2011 [cited 15 August 2015]. Available from:http://www.triggerpointtherapist.com/blog/quadratus-lumborum-trigger-points/ql-trigger-points-masters-low-back-pain/
- ↑Page .P, Frank C, Lardner R. Assessment and Treatment of Muscle Imbalance: The Janda Approach .Champaign . Human Kinetics. 2010.
- ↑6.06.1Acupuncture Integrated. Low Back and Lower Body Myofascial Pain Syndromes. Available from:http://www.acupunctureintegrated.com/articles/low-back-and-lower-body-myofascial-pain-syndromes[accessed 19 April 2019].
