Cage systems that improve upon the prior art in various ways. In the preferred embodiments, devices are radiolucent, with markers, thereby allowing visualization of placement without excessive obscuration. Devices according to the invention eliminate multiple steps, instruments and trays, while being capable of a custom fit. The devices according to the invention permit easier and greater access to end plate surface area, and can be used with autografts, allografts, and biologics.

 
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