Acromiohumeral interval
Updates to Article Attributes
Body
was changed:
Acromiohumeral interval is a useful and reliable measurement on AP shoulder radiographs and when narrowed is indicative of rotator cuff tear or tendinopathy.
Measurement
The shortest distance is measured.
Plain radiograph
- true AP shoulder radiograph
- measure from the cortical bone at the inferior aspect of the acromion to the humeral head 3
MRI
- can also be performed on coronal and sagittal oblique T1 MR images
- inferior aspect of the acromion (marked by black line directly above the humeral head) directly inferiorly to the centre of the subchondral cortex of the humeral head 3
Interpretation
Measurements of the acromiohumeral interval in the following intervals are suggestive of pathology 1,2:
- >12 mm: shoulder dislocation; inferior subluxation (e.g. from joint effusion)
- 9-10 mm (range 8-12 mm): normal
- 6-7 mm: thinning of supraspinatus tendon
- <6 mm: supraspinatus tear
See also
-<p><strong>Acromiohumeral interval</strong> is a useful and reliable measurement on AP shoulder radiographs and when narrowed is indicative of <a href="/articles/rotator-cuff-tear">rotator cuff tear</a> or tendinopathy. </p><h4>Measurement</h4><p><span style="font-size:13px">The shortest distance is measured. </span></p><h5>Plain radiograph</h5><ul>- +<p><strong>Acromiohumeral interval</strong> is a useful and reliable measurement on AP shoulder radiographs and when narrowed is indicative of <a href="/articles/rotator-cuff-tear">rotator cuff tear</a> or tendinopathy. </p><h4>Measurement</h4><p>The shortest distance is measured. </p><h5>Plain radiograph</h5><ul>
References changed:
- 4. Scheyerer MJ, Brunner FE, Gerber C. The acromiohumeral distance and the subacromial clearance are correlated to the glenoid version. (2016) Orthopaedics & traumatology, surgery & research : OTSR. 102 (3): 305-9. <a href="https://doi.org/10.1016/j.otsr.2015.12.020">doi:10.1016/j.otsr.2015.12.020</a> - <a href="https://www.ncbi.nlm.nih.gov/pubmed/26952173">Pubmed</a> <span class="ref_v4"></span>
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