Author Topic: cup placement  (Read 1290 times)

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cup placement
« on: April 13, 2012, 12:48:33 AM »
Has anyone heard doctors say they are now not entirely sure that cup placment is key to reduce mom ware. I just saw a doctor and thats what he advised me. Thanks, lyn


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Re: cup placement
« Reply #1 on: April 13, 2012, 12:50:56 AM »
No, in fact more and more it's being proven that misaligned cups are turning out to be the cause of high metal ions and the subsequent issues.

We have seen a few people have issues who were hypersensitive to metal ions and had some bad reactions.

RH/Biomet U/C Dr. Gross/Lee Webb


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Re: cup placement
« Reply #2 on: April 13, 2012, 12:56:59 AM »
That sounds like something said to justify his errors or lack of knowledge.  I would keep looking for a doctor.
50 yo male left Biomet 2/28/11, right BHR 2/20/12


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Re: cup placement
« Reply #3 on: April 13, 2012, 06:09:01 AM »
As has been said sounds like a doc trying to cover up his preivious errors.
Train hard fight easy
LBHR 10/11/2011 Mr Ronan Treacy Birmingham England
60mm cup 54mm head
Rbhr 54mm head 60mm cup 12/02/15 Ronan Treacy ROH Birmingham England

John C

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Re: cup placement
« Reply #4 on: April 13, 2012, 03:42:53 PM »
There have been many published studies that conclude that cup placement is a key factor in MOM wear. If the cup is placed too vertically, the cap rubs against the upper edge of the cup, referred to as edge loading which leads to excessive wear. If the cup is placed properly, the cap rests against the smooth interior of the cup, instead of rubbing against the sharp edge.
There are certainly other factors that may affect how a persons body responds to the wear debris. There are other factors that may affect the amount of wear, such as design and metallurgy of different brands, but I believe that extensive studies have made it clear that edge loading due to poor cup placement is a leading cause of high wear.
I would like to give this doctor the benefit of the doubt by considering that you might not have understood him correctly. If you stated his position correctly, I would look for other opinions elsewhere.
John/ Left uncemented Biomet/ Dr Gross/ 6-16-08
Right uncemented Biomet/Dr Gross/ 4/25/18


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