A separated shoulder, also known as an acromioclavicular (AC) joint separation, occurs where the collarbone meets the highest point of the shoulder blade, the acromion.

What Is a Separated Shoulder?

Unlike a dislocated shoulder, which affects the ball-and-socket joint, a separated shoulder involves the ligaments that stabilize the AC joint. When these ligaments are stretched or torn, often due to a fall or blow to the shoulder, the result can range from mild pain to a visible bump or deformity.

Schedule Now with a Shoulder Specialist

Separated Shoulder Symptoms

Common symptoms include:

  • Pain at the top of the shoulder, especially with movement
  • Swelling or bruising
  • A visible bump or bulge over the joint
  • Tenderness to touch
  • Difficulty lifting or reaching overhead

In mild cases, the pain may subside in a few days, while severe separations can cause ongoing discomfort and limited shoulder movement.
The severity of the injury depends on how many ligaments are damaged:

  • Grade I: Mild sprain of the AC ligaments, no visible deformity.
  • Grade II: Partial tear of the AC ligaments and sprain of the coracoclavicular (CC) ligament, with a small bump.
  • Grade III: Complete tear of both AC and CC ligaments, causing a prominent bump and visible joint separation.

Shoulder Separation Treatment

Most separated shoulders heal well with nonsurgical treatment, even when there is a visible bump. Initial care focuses on pain management and restoring motion through:

  • Sling use to support the arm and reduce strain on the joint
  • Cold packs or ice to relieve pain and swelling
  • Pain medications such as NSAIDs to reduce inflammation
  • Physical therapy to restore range of motion, strength and flexibility

Many patients, including athletes, return to full function within a few weeks to months without surgery.

Separated Shoulder Surgery

Surgery may be considered if:

  • The deformity is severe
  • Pain persists despite nonsurgical treatment
  • The separation affects strength or arm function

Surgical repair typically involves reconstructing or stabilizing the torn ligaments. Depending on the case, your surgeon may use arthroscopic or open techniques, sometimes with a small plate or graft to secure the collarbone during healing. The plate is usually removed once the shoulder has stabilized.

Separated Shoulder vs. Dislocated Shoulder

Both dislocated shoulders and separated shoulders cause pain in very similar areas, so are commonly confused. Shoulder separation happens when ligaments are torn, while a shoulder dislocation happens when the shoulder joint pops out of the socket. A dislocated shoulder is almost always a more severe injury — but you may not be able to tell without a professional diagnosis.

Separated Shoulder Treatment at OrthoNebraska

Need relief from shoulder separation in the Omaha area? At OrthoNebraska, we want to make sure that our patients feel understood, safe and confident to take on an appropriate treatment plan. With proper management, we can help you reduce pain levels and improve quality of life.
Schedule Now with a Shoulder Specialist