Patent ID: 8876905

Claim:
An assembly for inserting a spacer between two vertebrae, the assembly comprising: i) a spacer having a variable axial height and comprising: a) an outer member comprising an inner wall and an outer wall having a pair of attachment features thereon adapted for mating with an instrument, b) an inner member comprising an outer wall and an end plate having a pocket having a substantially curved bottom thereon adapted for mating with the instrument, wherein the outer wall of the inner member is guided within the inner wall of the outer member to be adjustable relative thereto in an axial direction thereof for adjusting an overall height, and ii) an insertion instrument comprising: a) a fork comprising a proximal shaft comprising a handle, an intermediate crossbar, and a distal portion comprising a pair of extensions, the extensions having a pair of opposing bosses, b) a lever having a proximal shaft comprising a handle, an intermediate portion and a substantially curved distal end, wherein the intermediate portion of the lever pivots upon the crossbar, wherein the opposing bosses mate with the pair of attachment features, and wherein the substantially curved distal end of the lever pivotally mates with the substantially curved bottom of the pocket.