1. A postural screening method using a mobile, programmed, hand-held communication device including a display screen, a camera for acquiring an image of a patient on the display screen, and at least one positional device selected from the group consisting of a gyroscope, an accelerometer, and a level, the method comprising: displaying an image on the display screen of the camera's current view of a patient, utilizing the at least one positional device of the mobile, programmed, hand-held communication device to level the camera, capturing an image of the patient once the camera is leveled, determining a pixel to distance ratio for the displayed image, calculating a postural displacement of the patient in the displayed captured image using the determined ratio.