The sternoclavicular (SC) joint is where the collarbone meets the breastbone. A separation here — a torn ligament — usually comes from a direct blow to the chest or a fall onto the shoulder, often in contact sports. It’s less common than an AC separation but worth taking seriously: if the collarbone is pushed behind the breastbone, it can risk nearby blood vessels, which is why imaging (X-ray or CT) is used to check the joint carefully.
Early management
Ice, anti-inflammatory medication, and a sling to rest the joint. Most cases heal without surgery; surgery is reserved for cases where the collarbone is displaced behind the breastbone or the joint stays unstable.
Rehab progression
- Chest and shoulder stretches: gentle stretches with hands clasped behind the back to restore flexibility.
- Active range of motion: single-arm shoulder abduction and prone shoulder extension.
- Light resistance: supine and standing arm lifts, adding a light weight as strength returns.
You’re generally ready to return to sport once the joint is pain-free with full strength and range of motion.
Sternoclavicular joint injury rehabilitation
This page is educational and general in nature and does not replace an individualized evaluation — see our medical disclaimer.