Here are three interesting facts about the elbow:

1. Three Joints in One: The elbow is actually a complex hinge joint made up of three different joints: the humeroulnar joint (between the humerus and ulna), the humeroradial joint (between the humerus and radius), and the proximal radioulnar joint (between the radius and ulna). This unique structure allows for both bending and rotating motions, enabling the arm to perform a wide range of activities.
2. Olecranon Process: The bony tip of the elbow that you can feel when you touch it is called the olecranon process. It’s part of the ulna bone and serves as a lever for muscles, particularly the triceps, which help extend the arm. This prominent structure is also a key point for diagnosing elbow injuries and conditions.
3. Tennis Elbow: Lateral epicondylitis, commonly known as tennis elbow, is a condition that results from overuse of the elbow joint, particularly the tendons that attach to the lateral epicondyle. Despite its name, it doesn’t only affect tennis players; anyone who engages in repetitive arm and wrist movements, such as painters, carpenters, and even office workers, can develop this painful condition.