An actuator with a sensor, including an actuator having a pair of electrodes and an ionic conduction layer present between the pair of electrodes, and a sensor having electrodes and an electromechanical conversion element. The energy transferred to or generated by the communicating member can be used to provide power to an implantable restriction system configured to form a restriction in a pathway. The light source is positioned to transmit a beam of light through the light receiving edge surface of the prism. The second test-mode storage device has its input connected to the output of the first test-mode storage device. The diagnostic mechanisms andor diagnostic parameters may be at least in part transferred from the service center to the vehicle upon execution of initialization. The invention includes compositions, materials or devices which will improve oxygen, substrate and nutrient delivery to joint tissues and modalities to decrease the degradation of joint tissues by inflammatory and other destructive processes.