Shoulder
AC Joint Sprain

An AC joint sprain, also called a separated shoulder, occurs when the ligaments connecting the collarbone (clavicle) to the shoulder blade are stretched or torn. It commonly happens after a direct hit or fall onto the shoulder in contact sports.

  • Pain at the top of the shoulder
  • Swelling or bruising
  • Pain lifting the arm
  • Shoulder weakness
  • Tenderness over the AC joint
  • Visible bump on the shoulder
  • Sharp pain after impact
  • Pain when reaching across the body
  • Shoulder feels sore or unstable
  • Pain carrying heavy objects
  • Discomfort with overhead movement
  • Falling directly onto the shoulder
  • Football or hockey collisions
  • Wrestling injuries
  • Cycling or skating falls
  • Direct impact during contact sports
  • Pain at the top of the shoulder after a fall or hit
  • Pain when lifting the arm
  • Tenderness over the collarbone area
  • Pain reaching across your chest
  • Visible bump near the shoulder

Educational only — not a medical diagnosis.

  1. 1Rest the shoulder
  2. 2Apply ice for 15–20 minutes
  3. 3Avoid overhead activity
  4. 4Use a sling if recommended
  5. 5Begin gentle motion as pain improves
  6. 6Seek evaluation if pain or deformity is significant
  • Severe deformity or large bump
  • Inability to move the arm
  • Numbness or tingling
  • Significant swelling or bruising
  • Persistent instability
  • Pain not improving with rest
  • Gradually restore shoulder mobility
  • Strengthen the shoulder and upper back
  • Avoid returning to contact sports too early
  • Maintain good posture during recovery
  • Progress activity slowly as pain decreases

For educational purposes only. Not a substitute for medical advice.

Tracks symptoms over time (not a diagnosis).