What is the first treatment tried for an AC joint injury?

The acromioclavicular, or AC, joint connects the collarbone to the shoulder blade. An injury can stretch or tear its supporting ligaments after a fall or direct blow. The first plan often reduces strain while swelling and tenderness settle, then rebuilds comfortable shoulder movement and strength.

A clinician may recommend a sling or other support for a limited period, ice wrapped in cloth, and suitable pain relief. The exact plan depends on examination findings, imaging, joint alignment, activity needs and whether there is another fracture or injury.

Have the shoulder assessed, especially after a fall or visible change in its shape. Use support as directed, avoid lifting and overhead activity at first, and move the elbow, wrist and fingers to prevent stiffness unless told otherwise. Begin shoulder exercises only when advised, increasing activity in stages. Physiotherapy can guide range-of-motion work and later strengthening.

Seek prompt assessment for severe deformity, an open wound, rapidly increasing swelling, or pain after a high-impact injury. Get urgent help if the hand becomes cold, pale or blue, or if there is new or worsening numbness, weakness or loss of pulse. Contact your clinician if pain or function is not gradually improving as expected.

How serious is the ligament injury, and do I need imaging? How long should I use a sling or avoid lifting? When can I start shoulder exercises, drive, work or return to sport? What change would make surgery or another treatment worth discussing?