What Causes Shoulder Pain? A Specialist's Overview

Your shoulder is the most mobile joint in your body. It can swing through a greater range of motion than any other joint — reaching overhead, rotating behind your back, throwing, lifting. That range is exactly why it's so vulnerable. The more a joint moves, the more structures are in play, and the more ways things can go wrong.

The result is that "shoulder pain" is not one condition. It's a symptom that can come from at least eight distinct causes, each with a different mechanism, a different feel, and a different treatment path. Getting the right answer matters — because physiotherapy for a rotator cuff tear is very different from physiotherapy for a frozen shoulder, and treating the wrong thing delays recovery.