Lateral acromial angle

Last revised by Yuranga Weerakkody on 6 Jan 2023

Citation, DOI, disclosures and article data

Citation:

Weerakkody Y, Knipe H, Hacking C, Lateral acromial angle. Reference article, Radiopaedia.org (Accessed on 24 Apr 2024) https://doi.org/10.53347/rID-90052

DOI:

https://doi.org/10.53347/rID-90052

Permalink:

https://radiopaedia.org/articles/90052

rID:

90052

Article created:

2 Jun 2021, Yuranga Weerakkody ◉

Disclosures:

At the time the article was created Yuranga Weerakkody had no recorded disclosures.

View Yuranga Weerakkody's current disclosures

Last revised:

6 Jan 2023, Yuranga Weerakkody ◉

Disclosures:

At the time the article was last revised Yuranga Weerakkody had no financial relationships to ineligible companies to disclose.

View Yuranga Weerakkody's current disclosures

Revisions:

8 times, by 3 contributors - see full revision history and disclosures

Systems:

Musculoskeletal

Synonyms:

Lateral acromial angle (LAA)
Lateral acromial tilt
Lateral acromial slope

The lateral acromial angle is a measurement performed on plain film AP projection or coronal images of CT or MRI to assess the position of the acromion.

Measurement

It is measured by drawing a vertical line lateral and perpendicular to the glenoid and a horizontal line parallel to the acromion undersurface.

Interpretation

A low lateral acromial angle can be associated with a higher incidence of rotator cuff impingement with some authors suggesting a cut off of around 70-75 degrees as lower limits of normal^3,4.