| http://www.w3.org/ns/prov#value | - However, all means, including the self transplantation bone, artificial vertebral body made of stainless steel, alumina ceramics and hydroxy apatite, bone cement made of polymethyl methacrylate or a combination of these, are used only to fix the connection between vertebral bodies without considering the dynamic characteristics inherent to the intervertebral disc of a living body.
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