To stop their joints aching and to make sure that their cartilage does not wear away.
Yes. Many people have artificial joints, and the Jarvik heart is 'bionic'.
Permanently damaged joints can now be replaced by Artificial Joints
Peter S. Walker has written: 'Human joints and their artificial replacements' -- subject(s): Artificial joints, Human mechanics, Joint Prosthesis, Joints
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Titanium
Titanium
Artificial joints, as well as natural joints, basically use the same method as all sorts of machinery does, namely, lubrication.
They are made of either prosthetic implant or bone cement.
Artificial Night was created in 2005.
Amor Artificial was created in 2007.
Artificial Studios was created in 2001.
Artificial Minds was created in 1995.