Iliopsoas muscle
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View Henry Knipe's current disclosuresAt the time the article was last revised Reabal Najjar had no financial relationships to ineligible companies to disclose.
View Reabal Najjar's current disclosures- Iliopsoas
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.
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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 tendon for iliopsoas muscle and inserting into the lesser trochanter of the femur via the psoas tendon.
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Clinical importance
The inferior portion of the iliopsoas below the inguinal ligament forms a part of the floor of the femoral triangle.
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
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