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
Joints are only necessary if your body has a skeleton or an exoskeleton. Worms and snails get by nicely without joints, as do many fish.
titanium
To stop their joints aching and to make sure that their cartilage does not wear away.
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.
Otherwise you could not move
Because the material is better when working properly they repair themselves up to a point.
Yes. Many people have artificial joints, and the Jarvik heart is 'bionic'.