Device for measuring the mobility of the head and/or the cervical spine about three mutually perpendicular axes

摘要

The device for measuring the mobility of the human head about three mutually perpendicular axes comprises a frame to be placed on to the body having angle measuring systems indicating the twisting of the body about one axis in each case. The angle measuring systems for the determination of the twisting about the horizontal axis are designed as a plumb pendulum whereas the angle measuring system for the determination of the mobility about the vertical axis is a compass.