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The ability of an acromion cluster in conjunction with the calibrated anatomical systems technique (CAST) to reconstruct scapula landmarks with increasing arm elevation has been impaired due to poor congruence between the acromion and cluster. The aim of this investigation was to evaluate the accuracy of a multiple calibration procedure (mCAST) adapted from [1] to reconstruct scapula landmarks. Scapula kinematics from eight participants were recorded within the frontal plane, with both the CAST and mCAST methods evaluated using RMSE. RMSE associated with the mCAST method was lower than the CAST method, particularly at higher angles of elevation by up to 0.028m. Therefore, findings from this investigation support the application of mCAST as an alternative method to increase acromion cluster validity. |
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