Resisted AC Joint Extension Test: Difference between revisions
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== Purpose == | == Purpose == | ||
Resisted AC Joint Extension Test (or the AC Resisted Extension Test) is used to help identify | 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 & Thompson SR. DeLee & 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 == | == Technique == | ||
#The patient is seated with the therapist standing behind him/her<ref name="Cook Book">Cook CE & 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 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 | |||
{{#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> | {{#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 == | == 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> == | ||
{| cellspacing="1" cellpadding="1" border="1" style="width: 400px; height: 120px;" | |||
|+ ''Diagnostic Test Properties for the Resisted AC Joint Extension Test'' | |||
|- | |||
| Sensitivity (%) | |||
| 72 | |||
|- | |||
| Specificity (%) | |||
| 85 | |||
|- | |||
| Positive Predictive Value (%) | |||
| 20 | |||
|- | |||
| Negative Predictive Value (%) | |||
| 98 | |||
|} | |||
<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. | |||
{| cellspacing="1" cellpadding="1" border="1" style="width: 700px; height: 120px;" | |||
|+ ''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 == | == References == | ||
<references /> <br> | <references /> | ||
<br> | |||
[[Category:Special_Tests]] [[Category:Shoulder]] [[Category:Musculoskeletal/Orthopaedics]] | [[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]
- The patient is seated with the therapist standing behind him/her[3]
- 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
- A positive test is pain at the AC joint
Evidence[5][edit | edit source]
| 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.
| 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]
- ↑ Miller MD & Thompson SR. DeLee & Drez's Orthopaedic Sports Medicine (4th Ed). Philadelphia, PA: Elsevier.
- ↑ Frontera WR, Silver JK, Rizzo TD (Jr). Essentials of Physical Medicine and Rehabilitation (3rd Ed). Philadelphia, PA: Elsevier.
- ↑ Cook CE & Hegedus EJ. Orthopedic Physical Examination Tests: An Evidence-Based Approach (2nd Ed). Boston, MA: Pearson.
- ↑ Resisted AC Joint Extension Test from https://www.youtube.com/watch?v=YHdZQnV0KhU. Last accessed April 1, 2016.
- ↑ 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.
