What type of joint does the clavicle form with the sternum?

The joint formed between the clavicle and the sternum is classified as a saddle joint. This type of joint is characterized by two articulating surfaces that are both concave and convex, resembling a saddle shape, which allows for a greater range of motion than a hinge or pivot joint.

In the case of the sternoclavicular joint (the joint between the clavicle and the sternum), the ability to move in multiple directions is essential for shoulder mobility. This joint allows for movements such as elevation and depression of the shoulder, along with some limited rotation and circumduction. The saddle joint structure facilitates these complex motions effectively, accommodating the dynamic movements of the upper limb.

Understanding the unique characteristics of a saddle joint helps clarify its role in providing stability while allowing versatility in shoulder movement. Such knowledge is crucial for orthopedic technologists as they interact with these anatomical zones.