{Reference Type}: Journal Article
{Title}: A new, effective method for diagnosing GLAD lesions: the chicken-wing muscle up test.
{Author}: Lin S;Zhong Z;Xiao J;Zheng Y;Shen F;Chen J;Yang X;Han X;
{Journal}: BMC Musculoskelet Disord
{Volume}: 25
{Issue}: 1
{Year}: 2024 Jul 30
{Factor}: 2.562
{DOI}: 10.1186/s12891-024-07699-1
{Abstract}: <B>OBJECTIVE: </B>We aimed to develop and evaluate a new diagnostic method, the 'chicken-wing muscle up test', to improve the accuracy of diagnosis of glenolabral articular disruption (GLAD) lesions compared to currently used clinical tests for injuries to the labrum.<BR><B>METHODS: </B>Preoperative evaluations were conducted on 85 patients undergoing arthroscopic surgery at a single center between July 2021 to July 2022. The diagnostic performance of the preoperative clinical examinations (chicken-wing muscle up test, O'Brien test, crank test, and O'Driscoll test) were validated against the findings of arthroscopic examinations.<BR><B>RESULTS: </B>12 of the 85 patients in this study had arthroscopically confirmed GLAD lesions. The chicken-wing muscle up test demonstrated significantly higher sensitivity (83.33%) for GLAD lesions than the O'Brien test (33.33%), but not the crank test (50.00%) or O'Driscoll test (25.00%), and significantly higher specificity (95.89%) than the O'Brien test (75.34%), crank test (82.19%), and O'Driscoll test (71.23%). The chicken-wing muscle up test had the largest area under the receiver operating characteristic curve (AUC = 0.896, P < 0.001; O'Driscoll test AUC = 0.543, P > 0.05; crank test AUC = 0.661, P > 0.05; O'Brien test AUC = 0.481, P > 0.05), indicating significantly better diagnostic efficacy for GLAD lesions than the other three tests.<BR><B>CONCLUSIONS: </B>The chicken-wing muscle up test is a reliable diagnostic method that improves the accuracy of diagnosis of GLAD lesions.