Acromiohumeral interval
Updates to Synonym Attributes
Updates to Synonym Attributes
Updates to Synonym Attributes
Updates to Synonym Attributes
Updates to Article Attributes
Body
was changed:
Acromiohumeral interval (AHI) is a useful and reliable measurement on AP shoulder radiographs and when narrowed is indicative of rotator cuff tear or tendonopathytendinopathy.
Pathology
Measurements of the AHI measurements in the following intervals are suggestive of pathology 1-2:
- >12mm - shoulder dislocation, subluxation
- 9-10mm (range 8-12mm) - normal
- 6-7mm - thinning of supraspinatus tendon
- <6mm - supraspinatus tear
Radiographic appearance
The shortest distance is measured.
Plain radiograph
- true AP shoulder radiograph
- measure from cortical bone at the inferior aspect of the acromion to the 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
See also
-<p><strong>Acromiohumeral interval</strong> (<strong>AHI</strong>) is a useful and reliable measurement on AP shoulder radiographs and when narrowed is indicative of <a title="Rotator cuff tears" href="/articles/rotator-cuff-tear">rotator cuff tear</a> or tendonopathy. </p><h4>Pathology</h4><p><span style="line-height:1.6em">AHI measurements <sup>1-2</sup>:</span></p><ul>-<li>9-10mm (range 8-12mm) - normal </li>-<li>6-7mm - thinning of supraspinatus tendon</li>- +<p><strong>Acromiohumeral interval</strong> (<strong>AHI</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>Pathology</h4><p>Measurements of the AHI in the following intervals are suggestive of pathology <sup>1-2</sup>:</p><ul>
- +<li>>12mm - <a href="/articles/shoulder-dislocation">shoulder dislocation</a>, subluxation</li>
- +<li><strong>9-10mm (range 8-12mm) - normal </strong></li>
- +<li>6-7mm - thinning of <a href="/articles/supraspinatus">supraspinatus tendon</a>
- +</li>
-</ul><p><br> </p>- +</ul><h4>See also</h4><ul><li><a href="/articles/normal-roentgenographic-measurements-of-the-shoulder">normal radiographic measurements of the shoulder</a></li></ul>
References changed:
- 2. Davies AM. Imaging of the Shoulder: Techniques and Applications (Medical Radiology / Diagnostic Imaging). Springer. ISBN:B0014DAE8A. <a href="http://books.google.com/books?vid=ISBNB0014DAE8A">Read it at Google Books</a> - <a href="http://www.amazon.com/gp/product/B0014DAE8A">Find it at Amazon</a><span class="auto"></span>
- 2. Davies AM. Imaging of the Shoulder: Techniques and Applications (Medical Radiology / Diagnostic Imaging). Springer. ISBN:B0014DAE8A. <a href="http://books.google.com/books?vid=ISBNB0014DAE8A">Read it at Google Books</a> - <a href="http://www.amazon.com/gp/product/B0014DAE8A">Find it at Amazon</a><span class="auto"></span>
- 1. Gruber G, Bernhardt GA, Clar H et-al. Measurement of the acromiohumeral interval on standardized anteroposterior radiographs: a prospective study of observer variability. J Shoulder Elbow Surg. 2010;19 (1): 10-3. <a href="http://dx.doi.org/10.1016/j.jse.2009.04.010">doi:10.1016/j.jse.2009.04.010</a> - <a href="http://www.ncbi.nlm.nih.gov/pubmed/19556147">Pubmed citation</a><span class="auto"></span>
- 3. Saupe N, Pfirrmann CW, Schmid MR et-al. Association between rotator cuff abnormalities and reduced acromiohumeral distance. AJR Am J Roentgenol. 2006;187 (2): 376-82. <a href="http://dx.doi.org/10.2214/AJR.05.0435">doi:10.2214/AJR.05.0435</a> - <a href="http://www.ncbi.nlm.nih.gov/pubmed/16861541">Pubmed citation</a><span class="auto"></span>
- 3. Saupe N, Pfirrmann CW, Schmid MR et-al. Association between rotator cuff abnormalities and reduced acromiohumeral distance. AJR Am J Roentgenol. 2006;187 (2): 376-82. <a href="http://dx.doi.org/10.2214/AJR.05.0435">doi:10.2214/AJR.05.0435</a> - <a href="http://www.ncbi.nlm.nih.gov/pubmed/16861541">Pubmed citation</a><span class="auto"></span>
- Davies AM. Imaging of the Shoulder: Techniques and Applications (Medical Radiology / Diagnostic Imaging). Springer. ISBN:B0014DAE8A. <a href="http://books.google.com/books?vid=ISBNB0014DAE8A">Read it at Google Books</a> - <a href="http://www.amazon.com/gp/product/B0014DAE8A">Find it at Amazon</a><span class="auto"></span>
- Saupe N, Pfirrmann CW, Schmid MR et-al. Association between rotator cuff abnormalities and reduced acromiohumeral distance. AJR Am J Roentgenol. 2006;187 (2): 376-82. <a href="http://dx.doi.org/10.2214/AJR.05.0435">doi:10.2214/AJR.05.0435</a> - <a href="http://www.ncbi.nlm.nih.gov/pubmed/16861541">Pubmed citation</a><span class="auto"></span>
Tags changed:
- shoulder
- rotator cuff
- tear
- measurement
- radiograph
Sections changed:
- Approach
Systems changed:
- Musculoskeletal
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