Iliopsoas muscle
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At the time the article was created Henry Knipe had no recorded disclosures.
View Henry Knipe's current disclosuresAt the time the article was last revised Arlene Campos had no financial relationships to ineligible companies to disclose.
View Arlene Campos's current disclosures- Iliopsoas
- Psoas tendon
- Iliospsoas tendon
The iliopsoas muscle is a large compound pelvic muscle composed of the psoas major and iliacus. The iliopsoas belongs to the anterior compartment of the pelvic muscles and is a muscle of the posterior abdominal wall. It found within the iliopsoas compartment and is an important muscle in locomotion and upright posture.
On this page:
Summary
origin: fusion of psoas major and iliacus muscles
insertion: lesser trochanter of the femur
blood supply: iliolumbar artery; medial femoral circumflex artery
innervation: femoral nerve; lumbar plexus
action: flexor of the hip and trunk; lateral flexor of the trunk
Gross anatomy
Origin
The iliopsoas muscle has its origin at the fusion of the psoas major and iliacus muscles. This fusion occurs at the level of L5-S2, and the combined muscles pass from the pelvis to the thigh under the inguinal ligament.
Insertion
The psoas major and iliacus muscles merge at the level of the hip joint capsule, forming a common/conjoint tendon for iliopsoas muscle and inserting into the lesser trochanter; some iliacus muscles fibers directly attach to the lesser trochanter rather than via the tendon 5. The iliopsoas bursa lies between the posterior aspect of the iliopsoas muscle/tendon and the anterior hip joint.
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Variant anatomy
-
bifid iliopsoas tendon 5,6
separate tendons between the level of the femoral neck and the lesser trochanter
on MRI, can be seen as a high T1 signal cleft between two low signal tendons
Clinical importance
The inferior portion of the iliopsoas tendon below the inguinal ligament forms a part of the floor of the femoral triangle.
Related pathology
See also
References
- 1. Torres GM, Cernigliaro JG, Abbitt PL et-al. Iliopsoas compartment: normal anatomy and pathologic processes. Radiographics. 1995;15 (6): 1285-97. doi:10.1148/radiographics.15.6.8577956 - Pubmed citation
- 2. Schuenke M, Schulte E, Schumacher U et-al. General Anatomy and Musculoskeletal System. Thieme. (2010) ISBN:1604062924. Read it at Google Books - Find it at Amazon
- 3. Keith L. Moore, Arthur F. Dalley, A. M. R. Agur. Clinically Oriented Anatomy. (2010) ISBN: 9780781775250 - Google Books
- 4. Frank H. Netter. Netter Atlas of Human Anatomy: Classic Regional Approach. (2022) ISBN: 9780323680424 - Google Books
- 5. Crompton T, Lloyd C, Kokkinakis M, Norman-Taylor F. The Prevalence of Bifid Iliopsoas Tendon on MRI in Children. J Child Orthop. 2014;8(4):333-6. doi:10.1007/s11832-014-0596-x
- 6. Deslandes M, Guillin R, Cardinal É, Hobden R, Bureau N. The Snapping Iliopsoas Tendon: New Mechanisms Using Dynamic Sonography. AJR Am J Roentgenol. 2008;190(3):576-81. doi:10.2214/ajr.07.2375 - Pubmed
Incoming Links
- Intrapelvic cup migration
- Pericapsular nerve group block (ultrasound-guided)
- Paralabral cyst of the hip
- Psoas major muscle
- Femoral triangle
- Femoral nerve neuropathy
- Hip joint
- Ultrasound of the hip (adult)
- Femur
- Apophyseal avulsion fractures of the pelvis and hip
- Skeletal muscle metastases
- Intertransversarii muscle group
- Avulsion injury
- Fascia iliaca compartment block (ultrasound)
- Iliopsoas bursa
- Snapping iliopsoas tendon
- Renal fascia
- Inner hip muscles
- Inguinal ligament
- Muscles of the lower limb
- Iliopsoas tendon - axial anatomy (illustration)
- Left groin abscess
- Terminal ileal diverticulitis
- Complicated Crohn disease
- Diffuse large B-cell lymphoma of the colon
- Psoas muscle abscess
- Lesser trochanter avulsion fracture
- Iliac crest apophysitis
- Haemophilia with deep pelvic haematoma
- Lesser trochanteric avulsion fracture
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hip joint
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