Articular disk of sternoclavicular articulation

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Articular disk of sternoclavicular articulation
Sternoclavicular articulation. Anterior view. (Articular disk labeled at upper right.)
Latin discus articularis articulationis sternoclavicularis
Gray's subject #81 314
Dorlands/Elsevier d_22/12300676

The articular disk of the sternoclavicular articulation is flat and nearly circular, interposed between the articulating surfaces of the sternum and clavicle.

It is attached, above, to the upper and posterior border of the articular surface of the clavicle; below, to the cartilage of the first rib, near its junction with the sternum; and by its circumference to the interclavicular and anterior and posterior sternoclavicular ligaments.

It is thicker at the circumference, especially its upper and back part, than at its center.

It divides the joint into two cavities, each of which is furnished with a synovial membrane.

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This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained herein may be outdated. Please edit the article if this is the case, and feel free to remove this notice when it is no longer relevant.