Elbow Joint Anatomy

The elbow joint is where the upper arm bone (humerus) connects with two bones in the forearm: the radius and ulna. It functions as a hinge, allowing you to bend and straighten your arm. The joint is stabilized by ligaments, which act like sturdy bands, and supports muscles that enable movements like lifting or turning your hand. Inside the joint, a small cushion called cartilage helps reduce friction and wear. This complex structure provides both mobility and stability, enabling smooth and controlled arm movements essential for daily activities.