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.

Deltoid pain most commonly occurs due to an injury ... and muscles that cover the top of the humerus (a bone in your upper ...

Soft tissue injuries can cause many kinds of pain, including: The rotator cuff is a group of four tendons that hold your upper arm (humerus) into your shoulder blade. A rotator cuff tear can be ...