ADIR position

Last revised by Henry Knipe on 27 Jul 2022

Citation, DOI, disclosures and article data

Citation:

Glick Y, Knipe H, ADIR position. Reference article, Radiopaedia.org (Accessed on 20 Apr 2024) https://doi.org/10.53347/rID-51793

DOI:

https://doi.org/10.53347/rID-51793

Permalink:

https://radiopaedia.org/articles/51793

rID:

51793

Article created:

7 Mar 2017, Yaïr Glick ◉

Disclosures:

At the time the article was created Yaïr Glick had no recorded disclosures.

View Yaïr Glick's current disclosures

Last revised:

27 Jul 2022, Henry Knipe ◉ ◈

Disclosures:

At the time the article was last revised Henry Knipe had the following disclosures:

Radiopaedia Events Pty Ltd, Speaker fees (past)
Integral Diagnostics, Shareholder (ongoing)
Micro-X Ltd, Shareholder (ongoing)

These were assessed during peer review and were determined to not be relevant to the changes that were made.

View Henry Knipe's current disclosures

Revisions:

2 times, by 2 contributors - see full revision history and disclosures

Systems:

Musculoskeletal

Sections:

Radiography

Tags:

refs, cases, mri

The ADIR (ADduction and Internal Rotation) position relates to MR arthrography of the shoulder joint.

When added to a neutral-position shoulder protocol, MR arthrography in the ADIR position facilitates the diagnosis of labroligamentous lesions in patients with recurrent shoulder dislocations, particularly anterior labroligamentous periosteal sleeve avulsion (ALPSA) lesions and possibly other types of Bankart lesions, that is the classic Bankart and Perthes lesions.

The patient's pertinent hand is placed behind the back, thereby pulling the humeral head anteroinferiorly. This results in tensing of the posterior capsule with concurrent anterior capsule distension, which pulls contrast material into the anterior potential space.