Muscle Anatomy

Erector Spinae

The erector spinae, a prominent group of muscles, runs along the vertebral column, contributing to spine extension and postural support.

Arising from various points, including the posterior iliac crest, sacrum, lumbar vertebrae, thoracic vertebrae, and the back of the ribs, the erector spinae forms a robust muscle mass.

Extending upward, the muscle inserts into the vertebrae, ribs, and the base of the skull, spanning a significant portion of the spine.

The primary function of the erector spinae is to extend the spine, aiding in upright posture and back movement. It plays a crucial role in activities like standing, walking, and maintaining an erect position. Additionally, the erector spinae provides stability to the vertebral column, preventing excessive flexion and supporting the spine during various movements.