Abstract: An anatomical shoulder pulley system for use in the rehabilitation of various shoulder conditions. The device provides a means of converting the linear pull of a rope and pulley system into rotary motion that approximates the arc described by anatomical or physiological motion of the shoulder. The device can be adjusted to provide passive or assisted motion in varied planes of shoulder motion such as forward flexion, external or internal rotation or scapular plane shoulder elevation. A door unit section of the device secures the device to a standard door and provides a base for the device. Another section of the device consists of an arced track and associated components. The arced track may be secured to the door unit in varied degrees of rotation. A rope with a handle on one end is routed over a pulley located at the top of the arced track. The other end of the rope is attached to a track rider that can easily move upward and downward within the arced track.