Moment Arms of Deltoid and Rotator Cuff Research
Joseph Lengenderfer, Nolan Faber
The objective of this study was to measure and compare moment arms of normal glenoid and humeral head inclinations to altered glenoid and humeral head inclinations. This experiment was conducted with ten human cadaver shoulder specimens with no signs of rotator cuff damage. The end goal of this study was to determine if the moment arms in a shoulder could be increased to help strengthen injured rotator cuffs. Alterations to the glenoid and humeral head were achieved with rapid prototyped wedges of various sizes. The specimen data were collected with a Qualisys 3D motion capture system. Reflective markers were placed on different specimens to track the movement of the shoulder. Calculations and graphs were made with a MATLAB code.
The objective of this study was to measure and compare moment arms of normal glenoid and humeral head inclinations to altered glenoid and humeral head inclinations. This experiment was conducted with ten human cadaver shoulder specimens with no signs of rotator cuff damage. The end goal of this study was to determine if the moment arms in a shoulder could be increased to help strengthen injured rotator cuffs. Alterations to the glenoid and humeral head were achieved with rapid prototyped wedges of various sizes. The specimen data were collected with a Qualisys 3D motion capture system. Reflective markers were placed on different specimens to track the movement of the shoulder. Calculations and graphs were made with a MATLAB code.