CPM-Schulterbehandlungsschienen Kontrolle der Bewegungsübertragung von der Schiene auf den Probanden, Untersuchung mit der Videobewegungsanalyse

Continuous passive motion (CPM) shoulder motor devices are used to avoid damage from immobilization after injury of the shoulder joint. Depending on the kind of injury certain types of movement should be trained, others avoided. In this study we examined two customary CPM shoulder motor devices in healthy adults; we measured how much of the anticipated movement of the device will be transferred to the volunteer, furthermore if the movement will stay within the chosen rotational axis. The study was not designed to evaluate if the possible movement patterns of the device are advisable from the medical standpoint. The measurements in regard to kinetics were performed in abduction, elevation and rotation. If the range of motion was adjusted within the limits of normal every day shoulder joint movements we noticed only insignificant aberrations between the chosen movement of the CPM-device and the movement which the shoulder took over. Only by a major increase of the motion range of the CPM-device its movements were transferred to the entire shoulder girdle, which is in accord with the anatomy of shoulder movements.