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Definition of Iliopsoas muscle

Iliopsoas muscle: A blending of two muscles (the iliacus and psoas major) that run from the lumbar portion of the vertebral column to the femur. The main action of the iliopsoas is to flex the thigh at the hip joint.

Source: MedTerms™ Medical Dictionary
http://www.medicinenet.com/script/main/art.asp?articlekey=33869
Last Editorial Review: 6/14/2012

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