What is the joint where the acromion and the clavicle meet called?

The acromioclavicular joint is formed by the meeting of the acromion, which is a bony process on the scapula, and the clavicle, or collarbone. This joint plays a crucial role in the overall function of the shoulder by allowing for a range of motion between the scapula and the clavicle, which is essential for arm elevation and other shoulder movements.

In contrast, the glenohumeral joint refers to the ball-and-socket joint between the humerus and the scapula, primarily responsible for the wide range of motion in the shoulder. The sternoclavicular joint connects the sternum (breastbone) to the clavicle, serving a different purpose related to the arm's connection to the trunk. The term "shoulder joint" is often used more generally to refer to the entire shoulder region, including multiple joints, rather than specifically identifying the acromioclavicular joint.

Understanding the specific structure and function of these joints is critical for proper assessment and treatment of shoulder injuries and conditions. The acromioclavicular joint can be particularly vulnerable to injury, such as in falls or direct impacts, making it an important focus in emergency care and assessment.