Radial Collateral Ligament (elbow) on:
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The radial collateral ligament (RCL), lateral collateral ligament (LCL), or external lateral ligamentAs opposed to the "internal lateral ligament", better known as the medial or ulnar collateral ligament is a
Figure 4
/ref> and can be considered either a single ligament, in which case multiple distal attachments are generally mentioned and the annular ligament is described separately, or as several separate ligaments, in which case parts of those ligaments are often described as indistinguishable from each other. In the latter case, the ligaments are collectively referred to as the lateral collateral ligament complex (LCLC), consisting of four ligaments: * the radial collateral ligament roper(RCL), from the lateral epicondyle to the annular ligament deep to the common extensor tendon * the lateral ulnar collateral ligament (LUCL), from the lateral epicondyle to the supinator crest on the ulna. Near the attachment on the humerus this ligament is normally indistinguishable from the RCL and can be considered the posterior portion of it. described the distal part of the LUCL as "a definite bundle which normally crosses the annular band and gains attachment to the supinator crest, frequently to a special tubercle on that crest" but didn't name it. * the annular ligament (AL), from the posterior to the anterior margins of radial notch on the ulna, encircles the head of radius and holds it against the radial notch of ulna. * the accessory lateral collateral ligament (ALCL), from the inferior margin of the annular ligament to the supinator crest.
File:Elbow joint - deep dissection (anterior view, human cadaver).jpg, Elbow joint. Deep dissection. Anterior view.
File:Slide2xzxzxz.JPG, Elbow joint. Deep dissection. Anterior view.
The radial collateral ligament (RCL), lateral collateral ligament (LCL), or external lateral ligamentAs opposed to the "internal lateral ligament", better known as the medial or ulnar collateral ligament is a ligament
A ligament is a type of fibrous connective tissue in the body that connects bones to other bones. It also connects flight feathers to bones, in dinosaurs and birds. All 30,000 species of amniotes (land animals with internal bones) have liga ...
in the elbow
The elbow is the region between the upper arm and the forearm that surrounds the elbow joint. The elbow includes prominent landmarks such as the olecranon, the cubital fossa (also called the chelidon, or the elbow pit), and the lateral and t ...
on the side of the radius
In classical geometry, a radius (: radii or radiuses) of a circle or sphere is any of the line segments from its Centre (geometry), center to its perimeter, and in more modern usage, it is also their length. The radius of a regular polygon is th ...
.
Structure
The composition of the triangular ligamentous structure on the lateral side of the elbow varies widely between individuals, see alsFigure 4
/ref> and can be considered either a single ligament, in which case multiple distal attachments are generally mentioned and the annular ligament is described separately, or as several separate ligaments, in which case parts of those ligaments are often described as indistinguishable from each other. In the latter case, the ligaments are collectively referred to as the lateral collateral ligament complex (LCLC), consisting of four ligaments: * the radial collateral ligament roper(RCL), from the lateral epicondyle to the annular ligament deep to the common extensor tendon * the lateral ulnar collateral ligament (LUCL), from the lateral epicondyle to the supinator crest on the ulna. Near the attachment on the humerus this ligament is normally indistinguishable from the RCL and can be considered the posterior portion of it. described the distal part of the LUCL as "a definite bundle which normally crosses the annular band and gains attachment to the supinator crest, frequently to a special tubercle on that crest" but didn't name it. * the annular ligament (AL), from the posterior to the anterior margins of radial notch on the ulna, encircles the head of radius and holds it against the radial notch of ulna. * the accessory lateral collateral ligament (ALCL), from the inferior margin of the annular ligament to the supinator crest.
Clinical significance
The radial collateral ligament may be involved inlateral epicondylitis
Tennis elbow, also known as lateral epicondylitis is an enthesopathy (attachment point disease) of the origin of the extensor carpi radialis brevis on the lateral epicondyle. It causes pain and tenderness over the bony part of the Lateral epic ...
.
Additional images
Explanations
References
Bibliography
* * * * {{Authority control Ligaments of the upper limb