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Chronic Implantation of Multiple Flexible Polymer Electrode Arrays
Published on: October 4, 2019
[Implant allergy register--a first report]
1Klinik und Poliklinik für Dermatologie und Allergologie, Ludwig-Maximilians-Universität, Frauenlobstrasse 9-11, 80337, München, Deutschland. Ricarda.Eben@med.uni-muenchen.de
Introduction:
There are case reports about patients with metal implant allergy. However, large-scale observations regarding frequency and elicitors are lacking.
Material And Methods:
For 5 years we have been collecting data in a metal allergy register. Information about history, clinical picture, and allergy test results in patients with suspected allergy to metal implants, mostly osteosynthesis and arthroplasty materials, is obtained by means of a special consultation and by report forms.
Results:
Major complaints of the 239 patients were pain (68.2%), swelling (42.1%), and erythema (33.5%). A metal allergy was found in 29.6% of the patients, and 24.8% were allergic to potential bone cement components. In addition, peculiar reactions such as a persistent inflammatory response to metal particles in nickel/cobalt-allergic patients or the disappearance of complaints upon revision surgery using titanium-based materials were seen.
Conclusion:
After excluding causes such as infection or mechanical failure, allergy diagnosis using a patch test with implant metals and bone cement components is recommended in cases of suspected implant allergy.
