The invention relates to a method and an anti-luxation device for preventing dislocation of arthroplasty implants such as in hips. This simultaneous display allows a user to confirm the main text and attached files in the message. The compact form factors required in this application make the utilization of memory shape alloys particularly advantageous as they require minimal space. When the main power turns on, the second CPU determines that the signal is not outputted in order to reset the first CPU.