An intervertebral prosthetic disc is disclosed and can be installed within
an intervertebral space between a superior vertebra and an inferior
vertebra. The intervertebral prosthetic disc can include an inferior
component having a depression formed therein and a superior component
having a projection extending therefrom. The projection can be configured
to movably engage the depression and allow relative motion between the
inferior component and the superior component. Further, the projection
can include a superior wear resistant layer configured to engage the
depression.