What does "Psoas muscle" mean in a report or doctor's letter? In our medical dictionary, you will find a patient-friendly explanation of the meaning of this medical term.
The psoas muscle is a long muscle located on the side of the lumbar region of the lower spine and the brim of the pelvis. It is one of the most important muscles in the body because it's involved in many of our daily activities like walking and running. It also helps to stabilize the spine. If this muscle becomes tight or injured, it can cause lower back pain.
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