Split insertion-type intervertebral cage

A cage, which is configured to be inserted between a plurality of vertebrae, the cage comprising:

• a leading insertion coupler configured to be inserted from a front of the plurality of vertebrae and to be in position between the plurality of vertebrae;
• and
• a following insertion coupler configured to be combined with one surface of the leading insertion coupler and to be in position between the plurality of vertebrae,
• wherein the leading insertion coupler and the following insertion coupler, respectively, comprise one or more position detection portions disposed in inner parts and configured to detect positions of the leading insertion coupler and the following insertion coupler,
• wherein the leading insertion coupler includes a first upper surface and a first lower surface, and the following insertion coupler includes a second upper surface and a second lower surface,
• wherein the one or more position detection portions have a length to pass through the first and second upper surfaces and the first and second lower surfaces,
• wherein one or more of the one or more position detection portions are top/bottom detection portions, and
• wherein the top/bottom detection portions have a length smaller than the length of the position detection portions to pass through one of the first and second upper surfaces and the first and second lower surfaces.