FIGURE 1.
Marker placement and angle interpretation. This figure represents the marker placements for motion capture. (A). *Femur cluster: represents femur, middle point between trochanter—lateral femoral condyle (measured with tape measure); **Sacrum cluster: displays S1, S2, and S3 (placed on S2/3); ***Thoracolumbar Cluster: Displays T12 -T8 (placed on T9), # is the arm which is not represented. (B). Example HROM: When the terminal (←) and initial (▪) vectors were collinear it was defined as an angle of 180 degrees. In this example, a thoracic, lumbar, and hip flexion is initiated. During flexion, the terminal moves clockwise towards the initial and results in a negative number. Abbreviation: S, sacrum; T, thoracic spine; HROM, hip range of motion.
