yogabook / joints / sternocostal joint
Contents
Image: Sternocostal joint of the 1st rib, bilateral
Sternocostal joint
The sternocostal-rib joint connects the sternum (in the case of the first rib the manubrium sterni, otherwise the corpus) with the ribs (1-7) and is secured by ligaments: Ligg. sternocostalia radiata (rib cartilage to sternum), Ligg. costoxiphoidea (rib cartilage of ribs 6 and 7 to processus xiphoideus), Ligg. sternocostalia intraarticularia. Ribs 8-10 connect the ribs to each other in the interchondral articulations.
Articulating bones
Ligaments
Lig. costoxiphoideum
The costoxiphoid ligaments run from the cartilage of the 7th rib (and sometimes also the 6th rib) downwards to the xiphoid process.
Images:
(see above)
Costoclavicular ligament
Ligament extending obliquely from the medial 1st costal cartilage to the craniolateral underside of the clavicle. Ventrally the ligament is connected to the subclavian artery, dorsally it borders on the subclavian vein.
Images:
Linkmap: Sternum, ligaments
Linkmap: Manubrium with sternoclavicular joint
Linkmap: Clavicle
Anterior sternoclavicular ligament
stabilizing ligament of the sternoclavicular joint, see the description of the anterior sternoclavicular ligament there.
The anterior sternoclavicular ligaments are broad ligaments that extend on both sides from the anterior parts of the incisura clavicularis at the sternal end of the clavicle diagonally caudally-medially to the sternum manubrium. The ligament is partially covered by the pars sternalis of the sternocleidomastoid. Dorsally, it is connected to both articular surfaces, the articular disc and the capsule. It secures the clavicle against dorsal translation(retraction).
Images:
Linkmap: Sternum, ligaments
Linkmap: Sternoclavicular joint
Intra-articular sternocostal ligament
The sternocostal intraarticular ligament runs from the angulus or the neighboring parts of the corpus and manubrium through the joint capsule to the second rib and thus divides the joint into two parts. Sometimes these similar ligaments are also found on ribs 3 to 5, they then run to the incisura costalis of ribs 3 to 5 on the corpus sterni.
Images:
Linkmap: Sternum, ligaments
Linkmap: Sternoclavicular joint
Ligg. sternoclavicularia posterius
Stabilizing ligament of the sternoclavicular joint, see the description of the posterior sternoclavicular ligament there.
Images:
Linkmap: Sternocostal joint
Ligg. sternocostalia radiata
The radial sternocostal ligaments reinforce the sternocostal joints of ribs 2 to 5. They extend from the respective ribs to the periosteum of the sternum and are interwoven with the local ligaments.
Images:
Linkmap: Sternum, ligaments
Linkmap: Manubrium with sternoclavicular joint
Tests
Tests of the sternocostal joint
Joint blockage or rib fracture
Tests of the movement directions
Tests of the spanning muscles
Pictures
Manubrium sterni in section and plan view with joints
