AC Joint Injury/Separation

The highest area of the shoulder, the AC joint is where the shoulder blade and collar bone meet (acromium and clavicle). Any separation of the two is the result of damage to the ligaments. This type of injury varies by degree and should always be checked by a professional.

How to tell if you have an AC joint injury/separation

You experience:

  • A visible lump in the shoulder area
  • Pain, which starts off vague then becomes localized
  • Pain lifting the arm above shoulder level