Citation, DOI, disclosures and article data
Citation:
Glick Y, Knipe H, ADIR position. Reference article, Radiopaedia.org (Accessed on 14 Nov 2024) https://doi.org/10.53347/rID-51793
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
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.
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1. Song HT, Huh YM, Kim S, Lee SA, Kim SJ, Shin KH, Suh JS. Anterior-inferior labral lesions of recurrent shoulder dislocation evaluated by MR arthrography in an adduction internal rotation (ADIR) position. Journal of magnetic resonance imaging : JMRI. 23 (1): 29-35. doi:10.1002/jmri.20465 - Pubmed
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2. Robert Pedowitz, Christine B. Chung, Donald Resnick. Magnetic Resonance Imaging in Orthopedic Sports Medicine. ISBN: 9780387488974
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