An article and method for preventing a continuous passive motion (CPM) device from moving out of position or alignment that include a holding member adapted to pass around a portion of the CPM device and an anchoring member coupled with the holding member for retaining the CPM device holding member in position. The anchoring member is adapted to be placed under the user of the device and held fast by the weight of the user, thereby assuring secure control of the CPM device position by the user.