Methods and instrumentation for vertebral interbody fusion are provided. Sleeve assemblies can be provided with a reduced width portion adjacent the distal end to limit the amount of retraction of the surrounding vascular and neural structures required for the procedure. A sleeve assembly can be provided...http://www.google.de/patents/US6635062?utm_source=gb-gplus-sharePatent US6635062 - Methods and instrumentation for vertebral interbody fusion
