does my patient have rotator cuff disease?: evidence … · lr = 5.6 for full thickness tear of the...
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Does My Patient Have Rotator Cuff Disease?: Evidence-based Approaches to Shoulder Pain
Christie Seibert, MD
Primary Care Conference
September 25, 2013
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Learning Objectives
Review rotator cuff anatomy
Name and know how to perform the most accurate clinical exam findings for Rotator Cuff Disease (RCD)
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JAMA Rational Clinical Exam Series
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Epidemiology
3rd most common MSK complaint that causes adults to seek medical care
Rotator Cuff Disease (RCD) is the most common cause of shoulder pain in adults
Prevalence: 2.8% of adults older than 30yo 15% of adults older than 70yo 33% to 50% in a referral population
Vast majority of patients improve without surgery
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Abduction
External Rotation
External Rotation and Adduction
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Adduction and Internal Rotation
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Clinical Presentation
Shoulder and arm pain, especially during overhead activities
Often described as dull pain in the region of the deltoid muscle
Night pain especially when laying on the affected side
Weakness or stiffness (usually weakness is from pain, not true muscle weakness)
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Methods for Literature Review
Study was eligible if: Described hx, pe or clinical tests for RCD Detailed specificity and sensitivity of tests Used a reference standard (surgery/MRI/US)
2 reviewers assigned Level of Evidence using standardized JAMA Rational Clinical Exam approach
4641 results, 76 articles for full text review
28 studies used
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Likelihood Ratios (LR)
LR = probability of finding in patients with disease
probability of same finding in patients without disease
Example: 80% of patients with ascites have bulging flanks
40% of people without ascites have bulging flanks
LR = 2
The bigger the number, the more suggestive
that a finding will indicate the disease.
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Positive Values Increase the Likelihood of Disease
Likelihood Ratios Estimates of Increased Probability
2 15%
3 20%
4 25%
5 30%
6 35%
McGee, S. Simplifying Likelihood Ratios, JGIM, August 2002, 17 (8), 647-650.
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So which are the best shoulder tests?
Drum Roll Please…
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Only pain provocation test of the 6 studied that had LR >2.0
LR = 3.7
Neer and Hawkins tests performed poorly.
LR Neer = 1LR Hawkins = 1.5 with wide CI
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Strength Testing to Detect Full Rotator Cuff Tear
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LR = 5.6 for full thickness tear of the rotator cuff
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LR = 7.2 for full thickness tear of the rotator cuff
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Strength Test for Any RCD
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LR = 3.3 for any Rotator Cuff Disease
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Composite Tests(positive when the patient
experiences pain or weakness)
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LR = 2.6 for any RCD
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Limitations
All studies came from ortho/sports med literature
Do the LRs apply to the primary care setting?
No evidence that these tests perform better as a group
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References
From: Does This Patient With Shoulder Pain Have Rotator Cuff Disease?: The Rational Clinical Examination Systematic Review. JAMA. 2013;310(8):837-847
JAMA Network: jama.jamanetwork.com