The invention relates to a therapeutic device that surrounds and firmly grips the upper part of the arm and which allows the therapist to apply a pair of opposing tangential forces (13) to the protrusions or protuberances (6) and (7) of the device in order to perform passive internal and external shoulder rotation exercises without transmitting any force to the elbow. This means of applying forces directly to the upper part of the arm prevents the forearm from having to be used as a lever to perform rotations, which can damage or affect the elbow during the therapeutic process. In addition, the device allows the greatest possible force to be applied to the shoulder to maximise recovery. The alternative design of the device allows a variable speed motor to be coupled by incorporation of coupling parts (14), (15).
