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    Metal allergy and knee replacement surg.
    denthorn posted:
    My father (85 y.o.) is prepairing for knee replacement surg but I am very concerned about metal allergies and poss. "rejection" / failure of the prosthetic. He has rejected 7 titainium dental implants within 3months of placement. 3 were immediate load and 4were placed and covered to intigrate in the bone but actually migrated through the gingival tissue and were lost. I made him a metal partial denture but it caused him discomfort so I switched him to an acrylic one. He is also unable to wear his wedding ring due to irritationof the skin. The D.O. who is treating has assured me that there should be no problem with rejection but if this fails, my dad is wheelchair bound as there is no turning back after the bones are cut. He lives to bowl and golf and if he could not do those things, I do not think he would last too long. Does anyone have experiance with rejection/allergic reactions to prosthetics? Thanks, Dennis
    annette030 responded:
    Can't he go to an allergy doctor and be tested, just to make absolutely certain? I would be very leery of any doctor who let a patient worry about something that could be checked out fairly easily.

    Take care, Annette
    _swank_ responded:
    You could also ask his doctor about using the prosthetics made out of oxinium. But testing is the best bet. He really doesn't need his doctor's permission to have that done.
    Carok responded:
    regarding metal allergy or sensitivity: Most docs will give you a blank look! at least that has been my experience. Had hardware placed for a broken ankle and for 6 weeks I was great, then slowly fatigue started, leg heaviness, then a disconnected feeling from my belly button down, gait changes. These were nuerological changes! I did the Tri-test for mercury and this was negative.

    After reading about the Melisa test (and research on that site) I decided it might be a metal sensitivity. My orthopedic surgeon agreed to take the hardware out (this was about 6 months post op). He was not convinced about the metal sensitivity but ordered an x ray which revealed a broken screw.

    2 weeks later hardware came out (out patient surgery) and the next morning at home I felt like a veil had been removed from my whole body. I felt really good for several days but little by little some of the symptoms returned and now, little by little, my symptoms are better. I feel a hair better each day.

    Now it is my calves which are weak. The disconnected feeling is rare. My brain fog is completly gone. I read it may take up to 6 months to get back to normal.

    My implant was titanium and stainless. I am wondering if the broken screw emitted the metal molecules I might be sensitive too. I say might, because I have not had the Melisa test done yet which may confirm a sensitivity.

    I did see a nuerologist. He ordered an MRI because of my "disconnected feeling". He was very kind but of course he does not believe it is a metal sensitivity.
    annette030 replied to Carok's response:
    What you are describing does not sound like an allergy to me either. But, I guess it is good that you had the broken screw taken out along with the other metal pieces.

    Why haven't you had the test for a metal allergy to see if it was that or not?

    Take care, Annette
    Bal M Rajagopalan, MD responded:
    Hi denthorn,

    This issue is not very common. Your dad definitely seems to have a solid history of metal allergies. The knee implants are made generally from cobalt chrome alloy, so the surgeon may be assuming this is different from titanium, and may think this is not a problem. What is worrisome is his reaction to his wedding band, and this is likely not titanium. You should be concerned and I would encourage you to see an allergy specialist to quantify the degree of allergy to which components. I also encourage you to get a second orthopedic opinion after you have seen the allergist, and have the answers as to what your father is allergic to, and how bad his allergies are. Great question, thank you.

    Dr Raj

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