Anatomy:
Freely mobile ball-and-socket synovial joint
Participates in all movements of upper extremity
Only 50% of medial end of clavicle articulates with manubrium
Has dense fibrous capsule
Supporting ligaments are interclavicular ligament, anterior and posterior sternoclavicular ligaments, costoclavicular ligaments.
Degeneration:
Best seen on oblique coronal images
Narrowing of joint space, capsular hypertrophy, osteophyte formation
Sternoclavicular joint injury
References:
Aslam et al. MRI of sternum and sternoclavicular joint. BJR 75 (2002). 627-634
