Psoas Minor: Difference between revisions

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== Description  ==
== Description  ==
* Psoas Minor&nbsp;is a long slender muscle, placed in front of the [[Psoas_Major|Psoas major]].<ref name="p1">Gray, Henry. Anatomy of the Human Body. Philadelphia: Lea &amp; Febiger, 1918; Bartleby.com, 2000. www.bartleby.com/107/.</ref>
[[Image:Musculus_psoas_minor.png|psoas minor|alt=|right|frameless]]Psoas Minor&nbsp;is a thin paired muscle of the posterior abdominopelvic region, placed in front of the [[Psoas_Major|Psoas major]].<ref name="p1">Gray, Henry. Anatomy of the Human Body. Philadelphia: Lea &amp; Febiger, 1918; Bartleby.com, 2000. www.bartleby.com/107/.</ref> The psoas minor muscle origininates from the last [[Thoracic Vertebrae|thoracic vertebra]] and the first [[Lumbar Vertebrae|lumbar]]; it is present in 60% to 65% of the population. Distally, it converges with the [[iliacus]] fascia and the psoas major tendon to insert on the iliopectineal eminence (for 90% of the population).
 
* The major and minor psoas muscles and the iliacus muscle make up the iliopsoas musculotendinous unit. Commonly called [[Iliopsoas Tendinopathy|iliopsoas]] muscle. This complex muscle system can function as a unit or intervene as separate muscles. It is essential for correct standing or sitting [[Lumbar Examination|lumbar posture]], [[Hip Anatomy|hip joint]], and during [[Walking - Muscles Used|walking]] and [[Running Biomechanics|running]]<ref>Bordoni B, Varacallo M. [https://www.ncbi.nlm.nih.gov/books/NBK531508/ Anatomy, Bony Pelvis and Lower Limb, Iliopsoas Muscle.] StatPearls [Internet]. 2021 Jul 21. Available:https://www.ncbi.nlm.nih.gov/books/NBK531508/ (accessed 16.1.2022)</ref>.  
* The '''psoas minor''' is a thin, paired muscle of the posterior abdominopelvic region. It is located on the anterior aspect of the psoas major muscle, but does not extend with it beyond the inguinal ligament. Despite its close relation to the psoas major muscle, the psoas minor is not considered part of the iliopsoas muscle complex.
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[[Image:Musculus_psoas_minor.png|center|psoas minor]]
 
 
== Origin  ==
 
Lateral aspect of vertebral body of 12th thoracic and 1st lumbar vertebrae
<ref name="p2">http://www.anatomyexpert.com/app/structure/5312/</ref>
 
 
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== Insertion  ==
 
Pectineal line of pubis
<ref name="p2" />
 
 
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== Nerve Supply  ==
 
Small branch from the initial part of the lumbar ventral ramus(L1)
<ref name="p2" />
 
 
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== Blood Supply  ==
 
Lumbar arteries, lumbar branch of the iliolumbar artery.
<ref name="p2" />
 
 
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== Anatomy ==
* '''Origin:''' Lateral aspect of vertebral body of 12th thoracic and 1st lumbar vertebrae<ref name="p2">http://www.anatomyexpert.com/app/structure/5312/</ref>
* '''Insertion''': Pectineal line of pubis<ref name="p2" />
* '''Nerve Supply''': Small branch from the initial part of the lumbar ventral ramus(L1)<ref name="p2" />
* '''Blood Supply''': Lumbar arteries, lumbar branch of the iliolumbar artery.<ref name="p2" />
== Action  ==
== Action  ==


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<ref name="p2" />
<ref name="p2" />


== Clinical relevance ==
== Physiotherapy ==
 
'''[[Iliopsoas Tendinopathy|iliopsoas tendinopathy]]'''
==== '''iliopsoas tendinitis''' ====
<br>
* a rare cause of pain in the groin  that has been associated with inflammatory arthritis, acute trauma, and overuse  syndromes
* commonly seen  in athletes, often runners, dancers, and high jumpers
* usually  results from overuse or trauma. It is frequently known as jumpers hip or  dancers hip
* iliopsoas tendonitis following total arthroscopic  hip replacement iliopsoas syndrome can be reasonably commonplace
* psoas syndrome is usually a term used interchangeably with  iliopsoas tendinitis, internal snapping hip, or iliopsoas impingement
 
== Treatment  ==
-nonoperative treatment;
# including rest,
# nonsteroidal anti-inflammatory medications,
# and a stretching  program, has been recommended for the treatment of this condition - exercise programs that the patient can do at home with a focus on hip  rotation have demonstrated effectiveness in the reduction of pain and  improvement of activity for patients in pain
-surgical interventon       
* for refractory cases requiring surgery, arthroscopic lengthening of the  tendon can be completed for relief, and correcting intra-articular  pathology can be done
* release of the psoas tendon from the insertion is also a possible surgical option


== References ==
== References ==

Revision as of 10:16, 16 January 2022

Original Editor - Oyemi Sillo

Lead Editors - Kim Jackson, Eman Ammar, Lucinda hampton, Maram Salem, Oyemi Sillo and WikiSysop  

Description[edit | edit source]

Psoas Minor is a thin paired muscle of the posterior abdominopelvic region, placed in front of the Psoas major.[1] The psoas minor muscle origininates from the last thoracic vertebra and the first lumbar; it is present in 60% to 65% of the population. Distally, it converges with the iliacus fascia and the psoas major tendon to insert on the iliopectineal eminence (for 90% of the population).

  • The major and minor psoas muscles and the iliacus muscle make up the iliopsoas musculotendinous unit. Commonly called iliopsoas muscle. This complex muscle system can function as a unit or intervene as separate muscles. It is essential for correct standing or sitting lumbar posture, hip joint, and during walking and running[2].

Image 1:

Anatomy[edit | edit source]

  • Origin: Lateral aspect of vertebral body of 12th thoracic and 1st lumbar vertebrae[3]
  • Insertion: Pectineal line of pubis[3]
  • Nerve Supply: Small branch from the initial part of the lumbar ventral ramus(L1)[3]
  • Blood Supply: Lumbar arteries, lumbar branch of the iliolumbar artery.[3]

Action[edit | edit source]

Assists with flexion of the lumbar vertebral column [3]

Physiotherapy[edit | edit source]

iliopsoas tendinopathy

References[edit | edit source]

  1. ↑ Gray, Henry. Anatomy of the Human Body. Philadelphia: Lea & Febiger, 1918; Bartleby.com, 2000. www.bartleby.com/107/.
  2. ↑ Bordoni B, Varacallo M. Anatomy, Bony Pelvis and Lower Limb, Iliopsoas Muscle. StatPearls [Internet]. 2021 Jul 21. Available:https://www.ncbi.nlm.nih.gov/books/NBK531508/ (accessed 16.1.2022)
  3. ↑ 3.0 3.1 3.2 3.3 3.4 http://www.anatomyexpert.com/app/structure/5312/

[1]

  1. ↑ Anderson CN. Iliopsoas: pathology, diagnosis, and treatment. Clinics in sports medicine 2016;35(3):419-33. Micheo W. Musculoskeletal, Sports and Occupational Medicine. Demos Medical Publishing; 2010 Dec 21.
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