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9 Cards in this Set
- Front
- Back
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Introduction |
The elbow joint is a hinge type of synovial joint which is located 2-3 cm inferior to the humeral epicondyles. |
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Articulation |
The spool shaped trochlea and spherodial capitulum of the humerus articulate with the trochlear notch of the ulna and the slightly concave superior aspect of the head of radius |
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Joint capsule |
The fibrous layer of the joint capsule surrounding the joint is attached to the humerus at the margins of the lateral and medial ends of the articular surfaces of the capitulum and trochlea. Anteriorly and posteriorly, it is carried superiorly, proximal to the coronoid and olecranon fossae. The synovial membrane lines the internal surface of the fibrous layer of the joint capsule and the intrascapucular non articular parts of the humerus. It continues inferiorly with the synovial membrane of the proximal radio ulnar joint. |
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Ligaments |
The radial collateral ligament is found on the lateral side of the joint, extending from the lateral epicondyle, and blending with the annular ligament of the radius (a ligament from the proximal radioulnar joint).The ulnar collateral ligament originates from the medial epicondyle, and attaches to the coronoid process and olecranon of the ulna. They stabilize the flexing and extending motion of the arm. |
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Movement |
Flexion and extension(carrying angle 170 when fully extended) |
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Blood supply |
Supplied by the anastomosis of arteries around the elbow joint |
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Nerve supply |
Musculocutaneous, radial and ulnar nerves |
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Bursae around the elbow joint |
Intratendinous olecranon bursa, present in tendon of triceps brachii Subtendinous olecranon bursa, btw the olecranon and the triceps tendon Subcutaneous olecranon bursa, in the subcutaneous connective tissue over the olecranon |
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Clinicals |
Bursitis of the elbow occurs when the is excessive pressure and friction on the bursa of the upper limb causing pain Avulsion of medial epicondyle occurs in children from a fall that causes severe abduction of the extended elbow as fusion of epiphysis might not occur till 20. Ulnar collateral ligament reconstruction Posterior dislocation of the elbow joint may occur when children fall on their hands with their elbows flexed. |
