The elbow is a hinge joint made up of the humerus, ulna and radius. Fuss fk 1991 the ulnar collateral ligament of the human elbow joint. In this article, we shall look at the anatomy of the elbow joint. They are shaped and attached in such a way that allows the unique forearm movement of pronation and supination. Mob tcd clinical anatomy of elbow professor emeritus moira obrien frcpi, ffsem, ffsem uk, ftcd trinity college dublin 2. 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. The elbow is a complex joint that consists of three different articulations.
Variations in the normal anatomy of the collateral ligaments of the human elbow joint. It includes prominent landmarks such as the olecranon, the elbow pit, the lateral and medial epicondyles, and the elbow joint. Anatomy and physiology the elbow joint is a hinge joint in other words, it can be bent and stretched. The seven basic elements of elbow anatomy are the bones, the articular cartilages, the ligaments, tendons, muscles, blood vessels, and nerves. The structural congruencv of these articular surfaces makes the hunieroulnar joint one of the most stable joints in the human niusculo skeletal svstem 2. It communicates with the proximal radioulnar joint, in contrast to the wrist, which does not communicate with the distal radioulnar joint. It is put under extreme pressure as the point of injury or trauma. The elbow joint is a synovial joint found in the upper limb between the arm and the forearm. Elbow anatomy bones human anatomy diagram joints anatomy. Abnormal and surgical anatomy is addressed in subsequent chapters of this book dealing with the pertinent condition. Human elbow joint emblem, medicine clinic symbol design, joints diagnostics center, flat design logo, vector human elbow joint icon hand strong power muscle vector elbow joint in human body illustration. The elbow joint is one important joint in our body that is found where the humerus, ulna and radius bones meet. The elbow is the visible joint between the upper and lower parts of the arm.
The elbow is composed of three bones, cartilage coverings at the end of each bone, ligaments, tendons, and companion larger muscles. A bursa is a membranous sac filled with synovial fluid. Variations in the normal anatomy of the collateral ligaments. Stabilise lateral side of elbow joint limits varus stress on the elbow. Effective use of our hands requires stable, painless elbow joints. In addition to reading this article, be sure to watch our elbow anatomy animated tutorial video. Joints are thus functionally classified as a synarthrosis or immobile joint, an amphiarthrosis or slightly moveable joint, or as a diarthrosis, which is a freely moveable joint arthroun to fasten by a joint. In order to treat elbow lesions, physicians have to master the anatomy of the elbow joint. The coronoid process, lateral collateral ligament, and the a. The elbow allows for the flexion and extension of the forearm relative to the upper arm, as well as rotation of the forearm and wrist. Aug 05, 2012 in this episode of eorthopodtv, orthopaedic surgeon, randale c. The distal end of the humerus presents a rounded capitulum, for the joint with the radius.
Elbow, wrist and hand joints of the elbow the elbow is effectively three joints, consisting of the distal end of the humerus and the proximal ends of the radius and the ulna, and between the humerus and ulna. The radial collateral ligament is found on the lateral side of the. Nov 17, 2016 head anatomy human body anatomy muscle anatomy human anatomy and physiology anatomy study facial muscles anatomy skull anatomy elbow anatomy nerve anatomy anatomy warehouse is the largest supplier of anatomy models and healthcare education models to toptier universities and hospitals. Variations in the normal anatomy of the collateral. Nov 09, 2017 the human elbow is the summation of 3 articulations. Elbow joint is a synovial joint of the hinge variety between the lower end of the humerus and the upper ends of radius and ulna. Anatomy of the cruciate ligaments and their function in extension and flexion of the human knee joint. This rotation is easily noticed during activities such as handtomouth eating motions. This is an article about the joints, ligaments, blood supply, innervation and movements of the elbow. 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. Elbow muscles are commonly referred to as flexors or extensors, depending on how they affect elbow movement.
Apr 29, 2020 three bones participate in the elbow joint. Department of pathology and experimental therapeutics human anatomy. The trochlea of the humerus is received into the semilunar notch of the ulna, and the capitulum of the humerus articulates with the fovea on the head of the radius. Pdf design of human elbow joint mechanism researchgate. The lower end of the humerus flares out into two rounded protrusions called epicondyles, where muscles attach. However, the elbow joint is also a rotary joint that allows the lower arm to turn outward. The proximal radioulnar joint is found within same joint capsule of the elbow, but most. The elbow joint consists of three combined articulations. Pdf the ulnar collateral ligament of the human elbow. The elbow can be easily put under stress, as it is a major joint in one of the most active regions of the human body.
The coronoid process, lateral collateral ligament, and the anterior band of the medial collateral. Normal anatomy of the elbow ghadiali general surgery. Movements of the elbow joint are checked by the ligaments well before the bony. Sw 1992b anatomy of the ulnar part of the lateral collateral ligament of the elbow. Proximal to the elbow joint, the brachial artery, the largest in the arm, gives off two branches, a superior and inferior ulnar. Morrey this chapter discusses the normal anatomy of the elbow region. The elbow allows the bending and extension of the forearm, and it also allows the rotational movements of the radius and ulna that enable the palm of the hand to be turned upward or downward. Cartilage has a rubbery consistency that allows the joints to slide easily against one another and absorb shock. Recurrent branches, in some cases double, arise from radial, ulnar and interosseous arteries and run upwards both anterior and posterior to the elbow joint, to anastomose with descending articular branches of the profunda brachii, and the ulnar collateral arteries. The elbow joint helps the hand to approach or move away from the body, whatever the arm position resulting from shoulder movement. As with many human joints, the relatively simple anatomy of the elbow disguises a remarkable capability in both its range of motion as well as the forces it is capable of bearing.
It is also classified structurally as a compound joint, as there are two articulations in the joint. The elbow joint is the synovial hinge joint between the humerus in the upper arm and the radius and ulna in the forearm which allows the forearm and hand to be moved towards and away from the body. The elbow joint is the point at which the humerus articulates with the ulna and radius, with points of articulation between the trochlea of the humerus and trochlear notch of the ulna, along with the capitulum of the humerus and the head of the radius. The articular surfaces are connected together by a capsule. Applied anatomy bursitis of olecranon bursa involvement of joint in rheumatoid arthritis trauma skeletal dysplasia. The differences in the mechanical nature of the knee and elbow joints do not alter the basic function of their ligaments. Medical illustration of the anatomy of the elbow joint. Learn everything about the elbow joint at kenhub now. The arm is bent and rotated at the elbow by the biceps muscles in the upper arm. Normal anatomy of the elbow ligaments and tendons refer fig. Elbow joint anatomy of the upper extremity lecturio.
Apr 21, 2020 the blood supply to the elbow joint is derived from a number of periarticular anastamoses that are formed by the collateral and recurrent branches of the brachial, profunda brachii, radial and ulnar arteries. Apr 07, 2020 in order to treat elbow lesions, physicians have to master the anatomy of the elbow joint. Mob tcd injuries to elbow and wrist skin bones muscles, tendons nerves blood vessels 3. Thirdclass levers are the most common types in the body because they allow the muscle to be inserted near the joint and can thereby produce increased speed of. Pdf knowledge of anatomy is a necessary prerequisite to assess and plan the means and methods to deal with traumatic wrist injuries. The elbow joint is classified structurally as a synovial joint. A sound knowledge of the elbow anatomy is essential to diagnose and treat elbow sports injuries. Again, like we have in previous articles, we will hit the basic anatomy of the elbow joint to give you more information, because i am sure you have had some type of injury involving your elbow. The first 2 are the ones traditionally thought of as constituting the elbow. Ligaments located at the front, back, and sides of the elbow help stabilize the joint. The unique positioning and interaction of the bones in the joint allows for a small amount of rotation as well as hinge action. The anatomy of the elbow washington university orthopedics. Sechrest, md narrates an animated tutorial on anatomy of the elbow.
The elbow is a hinge joint between the lower end of the humerus bone in the upper arm and the upper end of the radius and ulnar bones in the lower arm. It consists of three joints, which lie within one joint capsule and together have two separate functions. Test your knowledge on the joints of the human body. Ebraheims educational animated video describes the anatomy of the lateral and medial elbow. The shape and orientation of the feline trochlea humeri is different to that of the dog, and lead to medial movement of the radius and ulna during flexion of the elbow joint 4. The elbow is a hinged joint made up of three bones, the humerus, ulna, and radius. Like all synovial joints, the elbow joint has a capsule enclosing the joint. Jul 16, 2019 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. During certain activities it can be subjected to significant loads, especially in racquet or throwing sports. Pdf the ulnar collateral ligament of the human elbow joint. Topical anatomy and general survey the contours of the biceps muscle and antecubital fossa are easily observed anteriorly. Elbow, anatomy, elbow joints, medical art, elbow ligaments and tendons poster orthopedic surgery the human elbow anatomy art your place to buy and sell all things handmade elbow, anatomy, elbow joints, medical art, elbow ligaments and tendons poster orthopedic surgery the human elbow anatomy art print1207 see more.
Anatomy, ligaments, movements, blood supply kenhub. The articular surfaces are connected together by a capsule, which is thickened medially. The force arm must be smaller than the resistance arm, and the applied force lies closer to the axis than the resistance force. Its a very important joint, but in all honesty it doesnt get a lot of love compared to other joints around the body. The ligamentous complexes of the elbow are involved in the pathoanatomy. The functional classification of joints is determined by the amount of mobility found between the adjacent bones. Since this movement takes place between the upper arm humerus and the cubitus ulna, we speak of the socalled humeralulnar joint. Explore and learn about the elbow joint with our 3d interactive anatomy atlas. Trochlea of humerus articulates with the throclear notch in the ulna creating an uniaxial hinge joint allowing flexion and extension. The elbow joint is considered to be a complexed joint that functions as a modified or loose hinge joint.
The bones are held together with ligaments that form the joint capsule. In order to understand these movements, you can find everything you need to know about elbow anatomy through these learning materials. Like the ulnar collateral ligament, the cruciates carry i fibres limiting extension and flexion, ii fibres taut in intermediate joint positions and iii a guiding bundle fuss, 1989. Extensors are on the inside of the arm and help extend the arm outward. Elbow, anatomy,elbow joints, medical art, elbow ligaments and tendons poster orthopedic surgery the human elbow anatomy art your place to buy and sell all things handmade elbow, anatomy,elbow joints, medical art, elbow ligaments and tendons poster orthopedic surgery the human elbow anatomy art print1207 see more. This in itself is strong and fibrous, strengthening the joint. Elbow joint type synovial hinge and compound as it has. The ulnar collateral ligament of the human elbow joint. Anatomy of the elbow, animation everything you need to.
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