From: Mike Rosing <rosing@neurophys.wisc.edu>
Newsgroups: sci.physics.plasma
Subject: Re: Plasma processing for bio-technology
Organization: University of Wisconsin, Madison
References: <b4psja$bdkd$1@saturn.cs.uml.edu>


Mridul_JU wrote:
> Which type of material can be used for the artificial human knee-joint
> rotatory function? Please suggest.
>
> Mridul Bose
> Department of Physics
> Jadavpur University, Kolkata, India
>
>

Interesting question. From this web site:
http://www.thephysiotherapysite.co.uk/knee/artificial_knee_parts.html

it says:

The metal components (often the femoral and sometimes the tibial) are made of
a steel alloy which has cobalt, chromium and molybdenum in it. This material is
inert in the body - it does not react with the tissue and fluids in the body to
cause problems, and is mechanically very strong. Tibial components can be made
of titanium instead which has great strength and is lighter than steel. The
plastic components are made of ultra high molecular weight polyethylene (UHMWP)
which is very dense, hard and smooth. The combination of metal and plastic gives
the joint very low friction so it moves easily with your weight on it and wears
very slowly.

I would think that the steel is some form of stainless and can be plasma
etched, but the plastic can not.

I did a web search on "artificial knee joint material" and got 12,000
references. There must be a lot more you can find specificly!

Patience, persistence, truth,
Dr. mike

--
Mike Rosing
www.beastrider.com BeastRider, LLC
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