An expandable spinal implant including an implant body transitionable between an initial configuration and an expanded configuration. The implant body includes first and second axial walls spaced apart along a transverse axis, with at least one of the walls including first and second axial wall portions...http://www.google.fr/patents/US7655043?utm_source=gb-gplus-shareBrevet US7655043 - Expandable spinal implant and associated instrumentation
Expandable spinal implant and associated instrumentation
