The lower (inferior) trapezius is V-shaped, starts near your shoulder blades, and runs down the middle of your back to your bottom rib. It works to pull your shoulder blades down and helps ...

The trapezius, traps, trapezoid muscle is in the upper back and helps the neck, shoulders, and arms move. Learn more about the causes and treatment of trapezius pain.

What causes a trapezius muscle strain? Find out what you need to know about this problem with your upper back muscle, including how to treat it and how to prevent it.