Metal pins, rods, artificial joints, limbs, or any other surgical implants generally reflect infrared waves; thus, are not heated by this system. Implanted silicone or silicone prosthetics for nose or ear replacement may be warmed by the infrared waves. Since silicone melts at over 392˚F (200˚C), it should not be adversely affected by the use of infrared sauna; nevertheless, you should consult your surgeon or physician prior to using an infrared sauna.