Your latissimus dorsi (your "lats") is a broad, flat, triangle-shaped muscle that spans your middle and lower back and extends to the front of your humerus (upper arm bone). It plays a role in ...

Upper back pain between the shoulder blades may result from poor posture or muscle strain. However, it can also stem from more serious problems with the spine, such as scoliosis or osteoarthritis.

Neck pain and shoulder pain that occur together typically happen due to an injury ... upper arm. Learn about massages and stretches for a frozen shoulder. Tendons are strong fibers that attach ...