Loose metalwork and pacemakers are prone to move under the strong magnetic field of an MR scanner, but implants and prostheses that are fixed to bone will not. I have had a shoulder replacement. Should I be taking antbiotic precautions before undergoing dental work? It is not common practice to counsel patients about antibiotics for dental procedures following total joint replacement, as there is no good evidence that it is required. Most surgeons follow the American Academy guidelines I have a shoulder replacement and want to know if airport metal detectors will detect my shoulder replacement? Shoulder replacements tend to be made out of stainless steel, cobalt chrome or titanium. All have some ferrous in them which could be detected by airport metal detectors. Steel has more ferrous than cobalt chrome, which has more than titanium. Whether a metal detector will detect your implant depends on the sensitivity settings on the detector. It is likely that a detector will pick up a steel or cobalt chrome implant.