elbow joint anatomy

Synovial joints can be further categorized based on function. The elbow joint is made up of three bones: the humerus bone (upper-arm bone), the ulna (forearm bone on the little finger side), and the radius bone (forearm bone on the thumb side) which provide two types of motion. The elbow joint is a complex hinge joint formed between the distal end of the humerus in the upper arm and the proximal ends of the ulna and radius in the forearm. It is triangular in shape, and is composed of three parts: an anterior, a posterior and an inferior band. The elbow joint is classified structurally as a synovial joint. Reviewer: Also explore over 15 similar quizzes in this category. Elbow Joint Anatomy and Significance. There are three bones that comprise the elbow joint: The humeroulnar and the humeroradial joints are the joints that give the elbow its characteristic hinge like properties. The elbow is a complex synovial joint formed by the articulations of the humerus, the radius, and the ulna. You’ve got an articulation between the humerus and the ulna, so that’s the humeroulnar joint. Synovial joints, also called diarthroses, are free movable joints. Your elbow joint is made up of bone, cartilage, ligaments and fluid. The bones are held together with ligaments that form the joint capsule. Chesterfield, MO 63017, 1044 N. Mason Road The elbow joint articulation is classified as a trochoginglymoid joint. Read more. While the biceps brachii and the brachialis muscles are the main flexors of the elbow joint, the brachioradialis muscle is also involved in flexion of the forearm at this joint. A third ligament, the annular ligament, holds the radial head tight against the ulna. Distal to the elbow joint, the radial artery gives off the radial recurrent artery, and the ulnar artery gives off the anterior and posterior ulnar recurrent arteries. Reading time: 13 minutes. In the anatomical position, the forearm is in the supine position. Elbow, in human anatomy, hinge joint formed by the meeting of the humerus (bone of the upper arm) and the radius and ulna (bones of the forearm). Choose from 500 different sets of elbow joint anatomy flashcards on Quizlet. The rounded surfaces of the trochlea and capitulum of the humerus rotate against the concave surfaces of the trochlear notch of the ulna and head of the radius. Medial Evaluation. Brachioradialis originates for the lateral aspect of the distal humerus above the lateral epicondyle. Pain is localised around the epicondylar region. Elbow joint: want to learn more about it? The distal fibres blend with the annular ligament that encloses the head of the radius, as well as with the fibres of the supinator and the extensor carpi radialis brevis muscles. The ulna and the humerus meet at the elbow and form a hinge which allows the arm to bend and straighten. “I would honestly say that Kenhub cut my study time in half.” Your elbow’s a joint formed where three bones come together -- your upper arm bone, called the humerus, and the ulna and the radius, the two bones that make up your forearm. The humeroulnar and humeroradial articulations of the elbow joint are served by the musculocutaneous, radial, and ulnar nerves. 5. Extension of the forearm at the elbow joint is the increase of the angle at the elbow to bring the forearm back to the anatomical position from a flexed position. Read on to learn more about the anatomy of your elbow and the many functions that this joint allows us to perform on a daily basis. The elbow joint has three different portions surrounded by a common joint capsule. Located in the subcutaneous tissue above the cubital fossa is a very superficial vein: the median cubital vein. It is also classified structurally as a compound joint, as there are two articulations in the joint. The important ligaments of the elbow are the medial collateral ligament (on the inside of the elbow) and the lateral collateral ligament (on the outside of the elbow.) Elbow Anatomy. Elbow joint: humero-ulnar joint, humeroradial joint and proximal radioulnar joint. At the elbow joint, you’ve got three joints which are involved. We think this is the most useful anatomy picture that you need. The tendon of the long head originates from the... Brachialis originates from the distal half … Do you want some help in learning the elbow joint? 5 public playlist includes this case RACS/UQ Advanced Surgical Anatomy Course - Upper and lower limbs Bones: item divided into humerus, radius and ulna specifically selectable. 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