Quadratus Lumborum: Difference between revisions
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The word quadratus comes from the Latin word "quadrus" meaning “square” while Lumborum comes from the Latin word "lumbus" for “loin.” | 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. | A thick, irregular, quadrilateral-shaped muscle sheet that lies in the posterior abdominal wall. | ||
== Anatomy == | == Anatomy == | ||
=== Origin<ref name="anatomy expert">Anatomyexpert.com | === Origin<ref name="anatomy expert">Anatomyexpert.com. AnatomyEXPERT: Quadratus lumborum - Structure Detail [Internet]. 2015 [cited 15 August 2015]. Available from: http://www.anatomyexpert.com/app/structure/5307/</ref> === | ||
Posterior Iliac Crest | Posterior Iliac Crest | ||
=== Insertion<ref name="anatomy expert" /> | === Insertion<ref name="anatomy expert" /> === | ||
Medial half of 12th rib and transverse processes of lumbar vertebrae | Medial half of 12th rib and transverse processes of lumbar vertebrae | ||
=== Nerve Supply === | === Nerve Supply<ref name="anatomy expert" /> === | ||
Subcostal nerve (T12)<br>Iliohypogastric and Ilioinguinal nerve (both from L1) <br>Branches from the ventral rami (L2 and L3) | Subcostal nerve (T12)<br>Iliohypogastric and Ilioinguinal nerve (both from L1) <br>Branches from the ventral rami (L2 and L3) | ||
=== Blood Supply<ref name="radiopaedia">Jarvis | === Blood Supply<ref name="radiopaedia">Jarvis M. Quadratus lumborum | Radiology Reference Article | Radiopaedia.org [Internet]. Radiopaedia.org. 2015 [cited 15 August 2015]. Available from: http://radiopaedia.org/articles/quadratus-lumborum</ref> === | ||
Branches of the subcostal artery<br>Branches of the lumbar arteries<br>The lumbar branch of the iliolumbar artery<br>The arteria lumbalis ima from the median sacral artery. | Branches of the subcostal artery<br>Branches of the lumbar arteries<br>The lumbar branch of the iliolumbar artery<br>The arteria lumbalis ima from the median sacral artery. | ||
== Function == | == Function == | ||
=== Actions === | === Actions<ref name="radiopaedia" /> === | ||
Quadratus Lumborum fixes the12th rib to stabilise diaphragm attachments during inspiration | Quadratus Lumborum fixes the12th rib to stabilise diaphragm attachments during inspiration | ||
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Lateral flexes the vertebral column | Lateral flexes the vertebral column | ||
Extends lumbar vertebrae | Extends lumbar vertebrae | ||
=== Functional contributions === | === Functional contributions === | ||
The primary antagonist to each Quadratus Lumborum muscle is the Quadratus Lumborum muscle on the other side of the body. | The primary antagonist to each Quadratus Lumborum muscle is the Quadratus Lumborum muscle on the other side of the body.<ref name="therapist">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/</ref> | ||
The muscle group is considered a postural muscle group. | The muscle group is considered a postural muscle group. | ||
== Trigger Point Referral Pattern == | == Trigger Point Referral Pattern == | ||
[[Image:Quadratus_lumborum_trigger_points_referred_pain-1024x768.jpg|500x300px]] | |||
[[Image:Quadratus-lumborum-trigger-point-interactions.jpg|500x300px]] | |||
== Techniques == | == Techniques == | ||
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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]
Origin[1][edit | edit source]
Posterior Iliac Crest
Insertion[1][edit | edit source]
Medial half of 12th rib and transverse processes of lumbar vertebrae
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[2][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[2][edit | edit source]
Quadratus Lumborum fixes the12th rib to stabilise diaphragm attachments during inspiration
Lateral flexes the vertebral column
Extends lumbar vertebrae
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.[3]
The muscle group is considered a postural muscle group.
Trigger Point Referral Pattern[edit | edit source]
Techniques[edit | edit source]
Palpation[edit | edit source]
Length Tension Testing[edit | edit source]
Treatment[edit | edit source]
Recent Related Research (from Pubmed)[edit | edit source]
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Resources[edit | edit source]
References[edit | edit source]
References will automatically be added here, see adding references tutorial.
- ↑ 1.0 1.1 1.2 Anatomyexpert.com. AnatomyEXPERT: Quadratus lumborum - Structure Detail [Internet]. 2015 [cited 15 August 2015]. Available from: http://www.anatomyexpert.com/app/structure/5307/
- ↑ 2.0 2.1 Jarvis M. Quadratus lumborum | Radiology Reference Article | Radiopaedia.org [Internet]. Radiopaedia.org. 2015 [cited 15 August 2015]. Available from: http://radiopaedia.org/articles/quadratus-lumborum
- ↑ 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/
