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KMID : 0858320070100010027
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Journal of the Korean Shoulder Elbow Society
2007 Volume.10 No. 1 p.27 ~ p.32
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What are Baluable Positive Signs of Supraspinatus Test for Diagnosis of Torn Rotator Cuff? -Comparison of Pain and Weakness in " Empty Can Test"and "Full Can Test" -
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Shin Hun-Kyu
Lee Yong-Taek
Jeong Hwa-Jae
Kim Jong-Min
Choi Jae-Yeol
Kim Eu-Gene
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Abstract
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Purpose: To investigate the validity of positive signs of supraspinatus test.
Materials and Methods: The empty can test and full can test were performed on 200 shoulders which were diagnosed with magnetic resonance imaging or surgical findings as full thickness tear, partial thickness tear and no tear.
Presence of pain, weakness, pain or weakness, and both pain and weakness were recorded as positive signs separately.
The two tests with positive signs were compared and analyzed.
Results: Pain and weakness were severity-dependent, and the empty-can test had a higher incidence of pain. The sensitivities of the two supraspinatus tests in all positive signs were higher when including partial-thickness tears in
the tear group; however, their specificities were higher when excluding partial-thickness tears. The sensitivities of an
empty-can test in ‘pain’, ‘pain or weakness’, ‘both pain and weakness’ were higher than those of the full-can test,
otherwise, the specificity of the full-can test for ‘pain’ and ‘pain or weakness’ were higher. Concordance rate between
‘pain or weakness’ and ‘pain’ was the highest in all categorization.
Conclusion: Both empty can and full can test were valuable for detecting torn rotator cuff.
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KEYWORD
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Suprapinatus test, Empty can test, Full can test
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