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An implant is a medical device made to replace and act as a missing biological structure (as compared with a transplant, which indicates transplanted biomedical tissue). The surface of implants that contact the body might be made of a biomedical material such as titanium, silicone or apatite or others depending on what is the most functional. In some cases implants contain electronics e.g. artificial pacemaker and cochlear implants. Some implants are bioactive, such as (subcutaneous) drug delivery devices in the form of e.g. implantable pills or drug-eluting stents.
In orthopedic surgery, implants may refer to devices that are placed over or within bones to hold a fracture reduction while prosthesis would be the more appropriate term for devices that replace a part or whole of a defunct joint. In this context implants may be placed within the body (internal) or placed outside the body (external). Dental implants are one of the few medical devices which permanently cross the boundary between the inside and the outside of the body, since the base of the implant is osseointegrated in the bone of the mandible or maxilla and the top of the implant is in the mouth, where it can be crowned with an artificial tooth.
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Complications
- Implant fail to osseointegrate
- Failure of components to fit properly
- Implant or its components fracture
- Peri-implantitis (inflammatory reaction around the implant) and bone loss
- Prosthetic failure
- Aesthetics
- (late deep) Infection
Failures
There have been many examples of implant failures, including rupture of silicone breast implants, hip joints and heart valves, all of which have caused FDA intervention. The consequences of implant failure depend on the critical nature of the implant, and its position in the body. Thus heart valve failure is likely to threaten the life of the individual, while breast implant of hip joint failure is less likely to be life-threatening.
Ethical concerns
Human rights and civil rights activists are concerned about the potential for government to misuse implants to monitor humans non-consensually, in unethical ways that are illegal.[1] [2] For example, military psychological operations could hypothetically involve the non-consensual, forced implantation of humans against those human's knowledge, to be used in unison with Global Navigation Satellite Systems to illegally monitor stated implanted humans.[1] Government could also theoretically act in further unethical manners, in which government would inform various civilians that they have been implanted and not allow the citizens to have stated implants removed, the tactic of which would be intended to psychologically demoralize targeted humans in absolutely unethical violations of human rights, civil rights and medical ethics.[3]
See also
Further Reading
- D.F. Williams, Williams Dictionary of Biomaterials. Liverpool University Press, 1999 ISBN-13: 978-0-85323-734-1; ISBN-10: 0-85323-734-4
References
- ^ a b Jon E. Dougherty. Concern over microchip implants. July, 1999. Article retrieved on September 21, 2008.
- ^ Sherry Shriner. How To Detect And Nullify Chip Implants. Retrieved on September 21, 2008.
- ^ Jeff Rense. Microchip Mind Control, Implants And Cybernetics. December 6, 2001.
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