The elbow is a complex hinge joint that connects the upper arm to the forearm. It is formed by the articulation of three bones: the humerus (upper arm bone), radius, and ulna (forearm bones). The elbow allows for movements like bending (flexion) and straightening (extension) of the arm, as well as rotation of the forearm.. This lateral elbow pain diagnosis chart focuses mainly on the causes of pain on the outer side of the elbow, but also incorporates some conditions that cause pain at the front or back of the elbow too. If you pain is concentrated right at the back of the elbow, check out the pain behind the elbow section.. A. Biceps Tendonitis. Biceps tendonitis, as mention above, causes pain at the front of.
A Guide to Understand Elbow Joint with Diagram. The elbow joint is a hinge joint made of three primary bones, the humerus, radius, and ulna.The joint ensures an uniaxial movement of the arm. As they participate in most of the works done by hand, it is significant to learn about the structure and function of this joint.. Elbow joint ligaments. Ligaments are like cords that connect bones together. There are three main ligaments in your elbows: Medial collateral ligament: The ligament that connects the inside edge of your humerus to your ulna. Lateral collateral ligament: The ligament that connects the outside edge of your humerus to your ulna. Annular ligament: A ligament that wraps around the head (top) of.