Dual-action expandable intervertebral implants

A method of implanting an intervertebral implant, the method comprising:

• inserting the intervertebral implant into anatomy of a patient, the intervertebral implant comprising a first component rotatably coupled to a second component at a pivot point;
• operating a first expansion mechanism to rotate the intervertebral implant at the pivot point to expand the intervertebral implant to a first level;
• and
• operating a second expansion mechanism to rotate the intervertebral implant at the pivot point from the first level to a second level.

A two-stage intervertebral implant comprising:

• an expandable cage comprising:
• an upper body;
• a lower body;
• and
• a pivot connecting the upper body and the lower body;
• a first expansion mechanism configured to pivot the upper body and the lower body at the pivot point in a first stage;
• and
• a second expansion mechanism configured to pivot the upper body and the lower body at the pivot point in a second stage beyond the first stage.