The latissimus dorsi muscle has a wide origin, primarily originating from the thoracic and lumbar vertebrae, lower ribs, and iliac crest (part of the pelvic bone). Insertion: The muscle fibers of the latissimus dorsi converge and insert into the floor of the intertubercular groove of the humerus, providing a solid attachment to the upper arm bone. Learn about the latissimus dorsi muscle, one of the largest muscles of the back, that helps move and stabilize the shoulder and arm. Find out its location, innervation, blood supply, and common causes and treatments of injury. The latissimus dorsi , commonly known as the "lats," is one of the largest muscles in the upper body and is important for various shoulder and arm movements, particularly in pulling actions. A strain of this muscle can significantly impact daily activities and athletic performance. Let’s discuss the causes, symptoms, and rehabilitation of latissimus dorsi muscle strains. Interactive 3D model of the latissimus dorsi muscle and information on its origin, insertion, action, innervation, and blood supply.
