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KMID : 0359420070250010136
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Korean Journal of Sports Medicine
2007 Volume.25 No. 1 p.136 ~ p.140
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The Pain and the Function of the Shoulder in Impingement Syndrome before and after the Impingement Test
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Park Jin-Young
Lee Woo-Seung
Kim Taik-Sun
Lee Sung-Tae
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Abstract
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The purpose of this study is to evaluate the strength of the shoulder before and after the impingement test using lidocaine injection in impingement syndrome. Between January 2002 and February 2005, 153 cases of the impingement syndrome were included in this study. We checked the muscle strength of supraspinatus, internal rotator and external rotator of the shoulder before and after the impingement test. We divided the group into 2 subgroups according to the average percentage decrease in pain to evaluate the correlation between pain and muscle weakness. And we devided the group into 2 groups according to the average age, sex, and stiffness respectively. Pain after the impingement test compared with that before the test decreased 67.1%. Pain in impingement syndrome without stiffness compared with that with stiffness was significantly lower after the test. The results showed no statistically significant difference in the strength of the shoulder except for increased supraspinatus strength in impingement syndrome with stiffness after the test. In case which the continuity of the rotator cuff is maintained, pain is not an important factor in the causes of shoulder weakness in this study. But in same case, particularly with shoulder stiffness, the supraspinatus strength can be decreased.
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KEYWORD
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Rotator cuff, Impingement syndrome, Impingement test, Strength
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