Shoulder injuries and different types of arthritis may cause acromioclavicular (AC) joint pain. The AC joint in the shoulder connects the collarbone to part of the shoulder blade. One of the AC ...

Flexion and extension refer to directions of motion that affect the angle of a joint. Flexion is when the joint is closed, while extension is when it is opened. Flexion and extension are the two ...

The terms mobility and flexibility are often used interchangeably in fitness conversations, yet they represent distinctly different aspects of physical capability with unique implications for movement ...

You’ve been told that exercise is essential for healthy joints. Maybe you dutifully hit the gym a few times a week or take a daily walk to keep your body moving. But what about the other 23 hours of ...