Although the elbows are not weight-bearing joints, they are considered to be most important for the functioning of the upper limbs. The elbow is a complex joint that is made up of the humerus (upper arm bone) and the ulna (forearm bone), which are connected by a series of muscles, ligaments, and tendons. The elbow joint is surrounded by a thin layer of cartilage that helps to cushion the bones and allow them to move smoothly. When this cartilage breaks down, elbow arthritis occurs and causes the bones to rub together.
The bones in the elbow are held together by ligaments to provide stability to the joint. Muscles and tendons move the bones around each other and help in performing various activities. Elbow dislocation occurs when the bones that make up the joint are forced out of alignment.
The elbow joint is essential for bending or straightening the arm to 180 degrees and lifting or moving objects. The elbow is a complex joint formed by the articulation of three bones – the humerus, radius, and ulna – which are lined by articular cartilage. Articular cartilage is a thin, tough, flexible, and slippery surface that acts as a shock absorber and cushion to reduce friction between the bones. The bones of the elbow are supported by ligaments, tendons, muscles, nerves, and blood vessels.