Spinal cage fixable through insertion of bone screws

A spinal cage configured to be fixed by bone screws, the spinal cage comprising:

• a cage body;
• a receiver disposed on a front surface of the cage body and including a plurality of screw holes for receiving the bone screws;
• and
• a fixture coupled to the receiver, adjacent to the plurality of screw holes, and configured to selectively block a portion of each of the plurality of screw holes,
• wherein, when each of the bone screws enters each of the plurality of screw holes, a front end of the fixture is moved in an outward direction of each of the plurality of screw holes, and when each bone screw is disposed in each of the plurality of screw holes, the front end of the fixture is moved in an inward direction of each of the plurality of screw holes to prevent each bone screw from being separated from each of the plurality of screw holes,
• wherein the fixture comprises:
• a support longitudinally coupled to an inside of the receiver;
• an extension including a first extension and a second extension, the first extension extending forward from an upper portion of a front surface of the support and disposed to be orthogonal to the support, and the second extension extending forward from a lower portion of the front surface of the support and disposed to be orthogonal to the support;
• and
• an upper and lower restraint part including an upper restraint part and a lower restraint part, the upper restraint part extending from a front end of the first extension to have an upward inclination angle, and the lower restraint part extending from a front end of the second extension to have a downward inclination angle.