The elbow joint is a hinge joint that connects the humerus in the upper arm to the radius and ulna in the forearm. It allows for bending and straightening of the arm, enabling movements such as lifting and throwing. The joint is stabilized by ligaments and surrounded by muscles that facilitate movement. The elbow joint consists of three main bones: the humerus, radius, and ulna. It is crucial for various daily activities, including eating, writing, and sports. Proper functioning of the elbow joint is essential for overall arm mobility and strength.