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Clin Shoulder Elbow > Volume 10(1); 2007 > Article
Journal of the Korean Shoulder and Elbow Society 2007;10(1):27-32.
DOI: https://doi.org/10.5397/CiSE.2007.10.1.027    Published online June 30, 2007.
What are Valuable Positive Signs of Supraspinatus Test for Diagnosis of Torn Rotator Cuff?: Comparison of Pain and Weakness in "Empty Can Test" and "Full Can Test"
Hun Kyu Shin, Eugene Kim, Hwa Jae Jeong, Jong Min Kim, Jae Yol Choi, Yong Taek Lee
1Department of Orthopedic Surgery, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Korea. eugene0809.kim@samsung.com
2Department of Rehabilitation, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Korea.
회전근 개 파열의 진단을 위한 극상근 검사에서 유용한 양성 징후는 무엇인가? -“ Empty can test”와 full can test”에서 통증과 근력 약화의 비교 -
신헌규·김유진*·정화재·김종민·최재열·이용택
성균관대학교 의과대학 강북삼성병원 정형외과, 재활의학과
Abstract
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.
Key Words: Supraspinatus test; Empty can test; Full can test
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