Capture volume and marker placement for 3D kinematic motion capture.

<p>Representative image of the experimental setup including 10 camera positions (pyramids), in-ground force plates (labeled 1 & 2 but not utilized), and kinematic model within the motion capture laboratory (left), marker placement defining rigid body segments (center), and Visual 3D upper extremity model including marker visualization, virtual amputation levels (25, 50, 75% residual humerus), segment geometries and coordinate axes (right).