Reliability of Shoulder Abduction Strength Measure for the Constant-Murley Score

摘要: Reports using the Constant-Murley score often lack details regarding how strength measurement was performed, which may have an important impact on results obtained. A description of is especially when patients are unable to adopt prescribed position 90° shoulder abduction, leading invalid or highly discrepant scores. We investigated influence abduction and torso with special emphasis intraobserver reliability. Thirty-three healthy volunteers were examined a handheld dynamometer (Isobex®) in 30°, 60°, without stabilization torso. linear correlation between measurements different degrees observed, values at average 15% lower than 60° 45% 30°. In multivariate analysis, gender weight had substantial individual positions. Intraobserver reliability related arm (intraclass coefficients, 0.71–0.93) highest for stabilization. These findings emphasize importance standardized positions ensuring high performing score.