The elbow joint comprises three bones: the upper arm bone, called the humerus, and the two forearm bones, called the radius and the ulna. The humerus connects like a loose hinge to the ulna while the two forearm bones work together to allow the forearm to rotate.Â
These bones are surrounded by cartilage, a flexible connective tissue that protects your bones by providing a smooth surface on which the bones can glide against one another without friction.
Any damage to the bones or cartilage in the elbow joint can cause chronic pain, swelling, and stiffness, necessitating an elbow replacement.
Elbow replacement can be done on just one portion of the joint in cases where only the head of one of your forearm bones, the radius, is damaged. Whole elbow replacement involves reshaping the ends of the bones that come together in the elbow.Â