So Goes the Psoas

psoas muscleThe Psoas (“so-az”) muscle helps flex the hip and stabilize the spine and is involved in everyday activities like walking and running. One of the iliopsoas group of muscles (along with the iliacus muscles), it is also is one of the most targeted muscles in discussions of lower back pain.

Your psoas major (so-az) muscles (you have one on each side of your spine) connect the lower portion of your back to the top of your thighs. Its major function is to stabilize the back and it’s the strongest and biggest player in a group of muscles called hip flexors that help flex your hips. Lay down and bring your knees to your chest and you’ll experience the psoas in action.

The psoas originates from the lumbar vertebrae and forms a strip of muscle about as big as your wrist along each side of the spine. It proceeds down and forward, crossing the outer edge of each pubis, then moves back again to attach on a bony prominence of the inner upper posterior femur (thigh bone) called the lesser trochanter. Continue reading “So Goes the Psoas”