Tag: Internal rotation

It is a common misconception that all pectoral muscles directly drive shoulder rotation. In fact, a misunderstanding of muscle function can lead to ineffective treatments for common postural issues. So, **Does pec minor internally rotate the shoulder?** The answer is more nuanced than a simple yes or no, involving a crucial indirect mechanism that affects overall shoulder health.

In anatomy, movement is meticulously defined by its relationship to the body's midline, or central axis. This standardized directional terminology is precisely why a rotational movement toward the center of the body is called internal rotation, distinguishing it from all other motions.