n
The configuration of the body in the upright position, which varies considerably among individuals. However, normal posture can be described as follows: the shoulder, pelvis, and eyes are level; the sagittal plane is between the feet, and the line of gravity passes through the center of gravity at the lumbosacral joint. When observed from the following positions, the line of gravity intersects the following structures: lateral position—anterior border of the ear, and the shoulder, hip, knee, and ankle joints; anterior position— nose, symphysis pubis, and between the knees and feet; posterior position—occiput, spinous processes, gluteal crease, and between the knees and feet.
