Iliopsoas

Iliopsoas is a group of muscles in the human body that includes the psoas major, psoas minor, and iliacus muscles. These muscles are located in the lower part of the body, specifically in the pelvis and lower back. They play a crucial role in various movements and functions of the body, such as walking, running, and maintaining posture.

Anatomy

The iliopsoas muscle group is composed of two major muscles: the psoas major and the iliacus. The psoas major originates from the lumbar vertebrae and intervertebral discs, while the iliacus originates from the iliac fossa and the sacrum. These muscles converge to form a common tendon, which inserts into the lesser trochanter of the femur.

The psoas minor is a smaller muscle that is present in about half of the human population. It originates from the lumbar vertebrae and inserts into the pectineal line and iliopubic eminence.

Function

The iliopsoas muscles are primarily responsible for flexing the hip joint, which is essential for movements such as walking and running. They also contribute to maintaining the body's posture, particularly when standing or sitting.

In addition to these functions, the iliopsoas muscles also play a role in the stabilization of the spine and the pelvis. They help to prevent excessive movement of these structures, which can lead to injury.

Clinical significance

Problems with the iliopsoas muscles can lead to a variety of health issues. For example, Iliopsoas syndrome, also known as psoas syndrome or iliopsoas bursitis, is a condition that can cause pain and limited mobility in the hip and lower back. This condition can be caused by overuse of the iliopsoas muscles, trauma, or an inflammatory disease.

Treatment for iliopsoas syndrome typically involves physical therapy, medication to reduce inflammation and pain, and in some cases, surgery.

See also

• Hip flexors
• Lower back pain
• Musculoskeletal system

Iliopsoas Resources
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