The right sternoclavicular joint is the synovial articulation between the medial end of the right clavicle and the manubrium of the sternum (and first costal cartilage). It is a saddle-type joint with a fibrocartilaginous disc and strong ligaments (sternoclavicular, costoclavicular, interclavicular). It allows elevation, depression, protraction, retraction and rotation of the shoulder girdle and is innervated by cervical plexus branches and the nerve to subclavius.

Computed tomography (CT) with thin‑slice cuts and 3D reconstruction is the investigation of choice for sternoclavicular joint bony injury and suspected dislocation, giving excellent detail of alignment and fractures. MRI is preferred for soft‑tissue, ligamentous injury, marrow edema and infection. Plain radiographs often miss SCJ pathology; ultrasound can help detect effusion but is operator‑dependent.

The sternoclavicular joint is usually not life‑threatening, but some problems can be serious. Anterior dislocations cause pain, swelling and limited shoulder movement and often respond to conservative care; posterior dislocations are rarer but potentially dangerous because they may compress the airway or major vessels, needing urgent assessment. Infection or chronic arthritis also requires prompt treatment. Seek immediate care for breathing, swallowing, or severe neurovascular symptoms.

Rest and protect the joint, use ice for acute swelling and heat for stiffness, and take NSAIDs as directed for pain. Immobilize briefly with a sling if needed, then begin gentle range-of-motion and shoulder‑blade strengthening exercises with a physiotherapist. Avoid heavy lifting and contact activities. See a doctor for swelling, deformity, severe pain or instability — imaging, injections or surgery may be needed for persistent cases.

Yes — the sternoclavicular joint can often be treated nonoperatively (rest, immobilization, physiotherapy) or repaired surgically when unstable, chronically painful, or posteriorly dislocated. Surgical options include open reduction, ligament reconstruction with tendon grafts, fixation, or medial clavicle excision. Posterior dislocations may need urgent surgery because of nearby vessels and airways. Recovery involves immobilization and graded physiotherapy; risks include infection and neurovascular injury.

Swelling at the right sternoclavicular joint can result from trauma or dislocation, osteoarthritis or inflammatory arthritis (e.g., rheumatoid or seronegative spondyloarthropathies), crystal arthropathy (gout/pseudogout), or septic arthritis. Look for pain, redness, warmth, fever, or limited shoulder movement; posterior dislocation may affect breathing or swallowing. Seek prompt medical evaluation, imaging, and possible blood tests or joint aspiration if infection is suspected.