The latissimus dorsi muscle is a large and powerful muscle located in the back, it originates on the anterior superior iliac spine and inserts on the patella and humerus, the latissimus dorsi is primarily responsible for extension of the spine and rotation of the scapula, it is also used to maintain posture and stabilize the thorax during physical activity, this muscle is essential for activities such as lifting heavy objects and doing back exercises such as barbell rows or dumbbell rows