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The sternocostal joints, also known as sternochondral joints or costosternal articulations, are synovial plane joints of the costal cartilages of the true ribs with the sternum. [1] The only exception is the first rib , which has a synchondrosis joint since the cartilage is directly united with the sternum. [ 1 ]
Severe trauma may lead to fracture of the costal cartilage. [6] Such injuries often go unnoticed during x-ray scans, but can be diagnosed with CT scans. [6] Surgery is typically used to fix the costal cartilage back onto either the rib or sternum. [6] Costal cartilage may be harvested for reparative use elsewhere in the body.
Anatomy of the costal cartilage. Costochondritis typically presents unilaterally (one side), which is typically the left side. [4] It affects primarily the 2nd to 5th ribs at the sternocostal and costochondral joints. [1] The most commonly reported symptom of costochondritis is chest pain that is often exacerbated by movement and deep breathing.
The costochondral joints are the joints between the ribs and costal cartilage in the front of the rib cage. They are hyaline cartilaginous joints (i.e. synchondrosis or primary cartilagenous joint). Each rib has a depression shaped like a cup that the costal cartilage articulates with. There is normally no movement at these joints.
The sternal angle marks the point at which the costal cartilage of either second rib articulates with the sternum. During physical examinations, the readily palpated sternal angle is thus used as a landmark to identify the 2nd rib, and by extension, by counting, also the remaining ribs. Meanwhile, the first rib cannot be used for this purpose ...
The articulations of the heads of the ribs (or costocentral articulations) constitute a series of gliding or arthrodial joints, and are formed by the articulation of the heads of the typical ribs with the costal facets on the contiguous margins of the bodies of the thoracic vertebrae and with the intervertebral discs between them; the first, eleventh and twelfth ribs each articulate with a ...
The sternocostal part is antagonistic to the clavicular part contributing to downward and forward movement of the arm and inward rotation when accompanied by adduction. The sternal fibers can also contribute to extension, but not beyond anatomical position. [9] Hypertrophy of the pectoralis major increases functionality. Maximal activation of ...
Costal cartilage: Identifiers; Latin: ligamenta sternocostalia radiata ... Anatomical terminology [edit on Wikidata] The radiate sternocostal ligaments are fibrous ...