Instrumentation for distracting an intervertebral space and determining an appropriate size for an artificial intervertebral disc to be implanted therein include static trials and a static trial holder for manipulating the static trials. Each static trial is provided with at least one notch that is engaged...http://www.google.de/patents/US20030078590?utm_source=gb-gplus-sharePatent US20030078590 - Static trials and related instruments and methods for use in implanting an artificial intervertebral disc
