Expansible intervertebral implant

A method comprising:

• providing an intervertebral implant comprising a body extending longitudinally along a primary axis and comprising:
• a baseplate disposed at a proximal end of the body;
• first and second elongated arms including a superior arm and an inferior arm disposed along the primary axis and each of the superior and inferior arms including a vertebral support surface, each of the first and second elongated arms being articulable relative to the baseplate such that the intervertebral implant comprises a collapsed position in which each of the first and second elongated arms is in a first or second spatial position, respectively, and a deployed position in which each of the first and second elongated arms is in a third or fourth spatial position, respectively, that differs from the corresponding one of the first and second spatial positions along both a secondary axis and a tertiary axis;
• an expansion mechanism comprising a pair of branches;
• and
• an insert configured to translate the expansion mechanism within the body of the intervertebral implant to articulate the first and second elongated arms in separate directions outwardly along the secondary axis and in a common direction upwardly along the tertiary axis;
• engaging a proximal end of the intervertebral implant with an insertion instrument comprising an implant holder tube to releasably engage the proximal end;
• translating a deployer relative to the implant holder tube to guide the distal end of the intervertebral implant into a desired intervertebral space, the deployer being positioned telescopically in the implant holder tube;
• and
• actuating the expansion mechanism by a connection rod positioned telescopically in the deployer to expand the first and second elongated arms along the secondary and tertiary axes.