Devices and methods for treating bone

A method of treating a fracture in a vertebral body, the method comprising:

• inserting a spinal system into the vertebral body in a collapsed state, the spinal system comprising:
• an upper plate, having a proximal end and a distal end;
• a lower plate in opposition to the upper plate;
• a posterior support leg engaged, at the proximal end, with the upper plate at a first corner and the lower plate at a second corner;
• and
• an anterior support leg engaged, at the distal end, with the upper plate at a third corner and the lower plate at a fourth corner;
• and
• expanding the spinal system to an expanded state, wherein the anterior support leg is configured to removably engage a plunger, wherein sliding movement of the plunger facilitates movement of the spinal system between the collapsed state and the expanded state,
• wherein the first, second, third, and fourth corners have a reduced thickness and are flexible enough to allow the upper plate and the lower plate to move toward each other in the collapsed state and to move away from each other in the expanded state such that in the expanded state, the upper plate is generally perpendicular to at least one of the anterior and posterior support legs, and in the collapsed state, the upper plate is generally angled relative to at least one of the anterior and posterior support legs, and
• wherein the spinal system is based towards the expanded state.