Acromion

Changed by Daniel J Bell, 22 Aug 2019

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

Gross anatomy

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

Attachments

Musculotendinous

mid portion of deltoid muscle originates from the acromion ¹

Ligamentous

acromioclavicular ligament attaches to the clavicle
coracoacromial ligament attaches to the coracoid

Relations

BloodArterial supply

primary nutrient branch of the subscapular artery and suprascapular arteries ²

Variant anatomy

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

type 1: flat acromion
type 2: curved acromion
type 3: hooked acromion

Related pathology

acromioclavicular joint (ACJ) injury

-<p>The <strong>acromion, </strong>also known as the <strong>acromial process</strong>, is a small section of the <a href="/articles/scapula">scapula</a> that extends anteriorly from the spine of the scapula. </p><h4>Gross anatomy</h4><p>It forms the <a href="/articles/acromioclavicular-joint-1">acromioclavicular joint</a> with the lateral third of the <a href="/articles/clavicle">clavicle</a>, and also connects with the coracoid process via the <a href="/articles/coracoacromial-ligament">coraco-acromial ligament</a>.</p><h5>Attachments</h5><h6>Musculotendinous</h6><ul><li>mid portion of <a href="/articles/deltoid-muscle">deltoid muscle</a> originates from the acromion <sup>1</sup>
+<p>The <strong>acromion</strong> (plural: acromia), also known as the <strong>acromial process</strong>, is a small projection of the <a href="/articles/scapula">scapula</a> that extends anteriorly from the spine of the scapula. </p><h4>Gross anatomy</h4><p>It forms the <a href="/articles/acromioclavicular-joint-1">acromioclavicular joint (ACJ)</a> with the lateral third of the <a href="/articles/clavicle">clavicle</a>, and also connects with the <a title="Coracoid process" href="/articles/coracoid-process">coracoid process</a> via the <a href="/articles/coracoacromial-ligament">coracoacromial ligament</a>.</p><h5>Attachments</h5><h6>Musculotendinous</h6><ul><li>mid portion of <a href="/articles/deltoid-muscle">deltoid muscle</a> originates from the acromion <sup>1</sup>
~~-<li><a href="/articles/coracoacromial-ligament">coraco-acromial ligament</a></li>~~
+<li><a href="/articles/coracoacromial-ligament">coracoacromial ligament</a></li>
~~-<li><a href="/articles/subacromial-subdeltoid-bursa">subacromial subdeltoid bursa</a></li>~~
-</ul><h4>Blood supply</h4><ul><li>primary nutrient branch of the <a href="/articles/subscapular-artery">subscapular artery</a> and <a href="/articles/suprascapular-artery">suprascapular arteries</a> <sup>2</sup>
+<li><a href="/articles/subacromial-subdeltoid-bursa">subacromial-subdeltoid bursa</a></li>
+</ul><h4>Arterial supply</h4><ul><li>primary nutrient branch of the <a href="/articles/subscapular-artery">subscapular artery</a> and <a href="/articles/suprascapular-artery">suprascapular arteries</a> <sup>2</sup>
~~-</ul><h4>Related pathology</h4><ul><li><a href="/articles/acromioclavicular-injury">acromioclavicular joint injury</a></li></ul>~~
+</ul><h4>Related pathology</h4><ul><li><a href="/articles/acromioclavicular-injury">acromioclavicular joint (ACJ) injury</a></li></ul>