radial head

The radial head is the top part of the radius bone in your forearm, located near your elbow. It acts as a crucial hinge point, allowing your arm to rotate, such as turning your palm up or down. The radial head also helps support the elbow joint and works together with the elbow's bones and muscles to enable smooth arm movement. It’s covered with a smooth cartilage that allows for easy movement and absorbs shock, helping prevent damage during daily activities or physical exertion.