The acromion (plural: acromia), also known as the acromial process, is a small projection of the scapula that extends anteriorly from the spine of the scapula. 

It forms the acromioclavicular joint (ACJ) with the lateral third of the clavicle, and also connects with the coracoid process via the coracoacromial ligament.

There are three classifications of the acromion that can be labeled using the inferior surface shape of the acromion 1

  • type 1: flat acromion
  • type 2: curved acromion
  • type 3: hooked acromion
Anatomy: Upper limb
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Article information

rID: 37566
Section: Anatomy
Synonyms or Alternate Spellings:
  • Acromia
  • Acromial process
  • Acromion process

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