Resisted AC Joint Extension Test: Difference between revisions

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Resisted AC Joint Extension Test (or the AC Resisted Extension Test) is used to help identify acromioclavicular joint pathology in both traumatic and non-traumatic/chronic overuse cases,<ref name="Miller book">Miller MD &amp; Thompson SR. DeLee &amp; Drez's Orthopaedic Sports Medicine (4th Ed). Philadelphia, PA: Elsevier.</ref> and can be useful in helping differentiate between AC joint and impingement syndromes.<ref name="Frontera book">Frontera WR, Silver JK, Rizzo TD (Jr). Essentials of Physical Medicine and Rehabilitation (3rd Ed). Philadelphia, PA: Elsevier.</ref>
Resisted AC Joint Extension Test (or the AC Resisted Extension Test) is used to help identify acromioclavicular joint pathology in both traumatic and non-traumatic/chronic overuse cases,<ref name="Miller book">Miller MD &amp; Thompson SR. DeLee &amp; Drez's Orthopaedic Sports Medicine (4th Ed). Philadelphia, PA: Elsevier.</ref> and can be useful in helping differentiate between AC joint and impingement syndromes.<ref name="Frontera book">Frontera WR, Silver JK, Rizzo TD (Jr). Essentials of Physical Medicine and Rehabilitation (3rd Ed). Philadelphia, PA: Elsevier.</ref>


== Technique<ref name="Cook Book">Cook CE &amp; Hegedus EJ. Orthopedic Physical Examination Tests: An Evidence-Based Approach (2nd Ed). Boston, MA: Pearson.</ref> ==
== Technique  ==


#The patient is seated with the therapist standing behind him/her  
#The patient is seated with the therapist standing behind him/her<ref name="Cook Book">Cook CE &amp; Hegedus EJ. Orthopedic Physical Examination Tests: An Evidence-Based Approach (2nd Ed). Boston, MA: Pearson.</ref>
#The patient's shoulder is positioned into 90 flexion and internal rotation, with the placed into 90 flexion  
#The patient's shoulder is positioned into 90 flexion and internal rotation, with the placed into 90 flexion  
#The therapist places his/her hand on the patient's elbow and asks him/her to horizontally abduct the arm against isometric resistance  
#The therapist places his/her hand on the patient's elbow and asks him/her to horizontally abduct the arm against isometric resistance  
#A positive test is pain at the AC joint
#A positive test is pain at the AC joint


{{#ev:youtube|DKLvt816x6o}}<ref>Physiotutors. Cross Body Adduction Test | Acromioclavicular Joint Pathology. Available from: https://www.youtube.com/watch?v=DKLvt816x6o</ref>
{{#ev:youtube|YHdZQnV0KhU}}<ref name="Youtube 1">Resisted AC Joint Extension Test from https://www.youtube.com/watch?v=YHdZQnV0KhU. Last accessed April 1, 2016.</ref>


== Evidence<ref name="Chronopoulos et al">Chronopoulos E1, Kim TK, Park HB, Ashenbrenner D, McFarland EG. Diagnostic value of physical tests for isolated chronic acromioclavicular lesions. Am J Sports Med, 2004; 32(3): 655-61.</ref>  ==
== Evidence<ref name="Chronopoulos et al">Chronopoulos E1, Kim TK, Park HB, Ashenbrenner D, McFarland EG. Diagnostic value of physical tests for isolated chronic acromioclavicular lesions. Am J Sports Med, 2004; 32(3): 655-61.</ref>  ==
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<br> '''Test Item Cluster:'''<br> This test can be combined with the Cross Body Adduction Test and [http://www.physio-pedia.com/O'Briens_Test O'Brien's Active Compression Test] as part of a cluster.  
<br> '''Test Item Cluster:'''<br> This test can be combined with the [[Scarf Test|Cross Body Adduction Test]] and [http://www.physio-pedia.com/O'Briens_Test O'Brien's Active Compression Test] as part of a cluster.  
 
{{#ev:youtube|npHPXrV6_JI}}<ref>Physiotutors. AC Joint Provocation Cluster | Acromioclavicular Joint Pathology. Available from: https://www.youtube.com/watch?v=npHPXrV6_JI</ref>


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== Resources  ==
*[https://books.google.ca/books/about/Orthopedic_Physical_Examination_Tests.html?id=bE7kXwAACAAJ&redir_esc=y Orthopedic Physical Examination Tests: An Evidence-Based Approach (2nd Ed)]
== Recent Related Research (from [http://www.ncbi.nlm.nih.gov/pubmed/ Pubmed])  ==
<div class="researchbox">
<rss>http://www.ncbi.nlm.nih.gov/entrez/eutils/erss.cgi?rss_guid=1L9ANQ88k4eDMqjNdQsd3YDndZLiQDHChdqSbTFP0OLdii</rss>
</div>


== References  ==
== References  ==
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<br>  
<br>  


[[Category:Assessment]] [[Category:Special_Tests]] [[Category:Shoulder Special Tests]] [[Category:Shoulder]] [[Category:Musculoskeletal/Orthopaedics]] [[Category:CPA Ortho Div Resources]]
[[Category:Assessment]]  
[[Category:Special_Tests]]  
[[Category:Shoulder]]  
[[Category:Shoulder - Assessment and Examination]]  
[[Category:Musculoskeletal/Orthopaedics]]  
[[Category:CPA Ortho Div Resources]]
[[Category:Sports Medicine]]
[[Category:Athlete Assessment]]
[[Category:Shoulder - Special Tests]]

Latest revision as of 22:23, 31 January 2021

Original Editor - Evan Thomas

Lead Editors - Evan Thomas, Rachael Lowe, Kim Jackson, Kai A. Sigel, WikiSysop, 127.0.0.1, Naomi O'Reilly, Wanda van Niekerk and Manisha Shrestha

Purpose[edit | edit source]

Resisted AC Joint Extension Test (or the AC Resisted Extension Test) is used to help identify acromioclavicular joint pathology in both traumatic and non-traumatic/chronic overuse cases,[1] and can be useful in helping differentiate between AC joint and impingement syndromes.[2]

Technique[edit | edit source]

  1. The patient is seated with the therapist standing behind him/her[3]
  2. The patient's shoulder is positioned into 90 flexion and internal rotation, with the placed into 90 flexion
  3. The therapist places his/her hand on the patient's elbow and asks him/her to horizontally abduct the arm against isometric resistance
  4. A positive test is pain at the AC joint

[4]

Evidence[5][edit | edit source]

Diagnostic Test Properties for the Resisted AC Joint Extension Test
Sensitivity (%)         72
Specificity (%)         85
Positive Predictive Value (%)         20
Negative Predictive Value (%)         98


Test Item Cluster:
This test can be combined with the Cross Body Adduction Test and O'Brien's Active Compression Test as part of a cluster.

Diagnostic Value of Combined Physical Tests
Sensitivity (%) Specificity (%) Positive Predictive Value (%) Negative Predictive Value (%)
Positive in 3/3           25           97                       31                       96
Positive in 2/3           81           89                       28                       99
Positive in 1/3            0           74                       17                      100

References[edit | edit source]

  1. ↑ Miller MD & Thompson SR. DeLee & Drez's Orthopaedic Sports Medicine (4th Ed). Philadelphia, PA: Elsevier.
  2. ↑ Frontera WR, Silver JK, Rizzo TD (Jr). Essentials of Physical Medicine and Rehabilitation (3rd Ed). Philadelphia, PA: Elsevier.
  3. ↑ Cook CE & Hegedus EJ. Orthopedic Physical Examination Tests: An Evidence-Based Approach (2nd Ed). Boston, MA: Pearson.
  4. ↑ Resisted AC Joint Extension Test from https://www.youtube.com/watch?v=YHdZQnV0KhU. Last accessed April 1, 2016.
  5. ↑ Chronopoulos E1, Kim TK, Park HB, Ashenbrenner D, McFarland EG. Diagnostic value of physical tests for isolated chronic acromioclavicular lesions. Am J Sports Med, 2004; 32(3): 655-61.


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