An expandable spinal implant (10, 20) deployable between a collapsed position and an expanded position in a disc space between upper and lower vertebral bodies, the expandable spinal implant (10, 20) comprising: a frame (100, 200) comprising a frame proximal end having a proximal wall (100, 210) and a frame distal end having a distal wall (120, 200), wherein the proximal wall (100, 210) defines a proximal aperture (111, 211) configured for receiving at least part of an insertion instrument, wherein the distal wall (120, 220) defines a distal aperture (121, 221); a plug (130, 230) movably disposed in the distal aperture (121, 221) and configured for movement from a proximal position to a distal position within the spinal implant (10, 20), wherein the plug (130, 230) comprises a threaded outer surface (131, 231); a first endplate (140, 240) pivotally engaged with the frame (100, 200) and configured to expand outward from the frame (100, 200), when the plug (130, 230) is moved from the proximal position to the distal position along a length of the implant (10, 20); a second endplate (150, 250) disposed opposing the first endplate (140, 240); wherein the first endplate (140, 240) and the second endplate (150, 250) extend from a proximal end of the implant (10, 20) to a distal end of the implant (10, 20) and cooperate to at least partially enclose the frame (100, 200); wherein the second endplate (150, 250) is pivotally engaged with the frame (100, 200) and configured to expand outward from the frame (100, 200), when the plug (130, 230) is moved from the proximal position to the distal position, characterized in that the first and second endplates (140, 150) are pivotably engaged with the frame via a hinge mechanism located near or on the proximal wall of the frame. a frame (100, 200) comprising a frame proximal end having a proximal wall (100, 210) and a frame distal end having a distal wall (120, 200), wherein the proximal wall (100, 210) defines a proximal aperture (111, 211) configured for receiving at least part of an insertion instrument, wherein the distal wall (120, 220) defines a distal aperture (121, 221); a plug (130, 230) movably disposed in the distal aperture (121, 221) and configured for movement from a proximal position to a distal position within the spinal implant (10, 20), wherein the plug (130, 230) comprises a threaded outer surface (131, 231); a first endplate (140, 240) pivotally engaged with the frame (100, 200) and configured to expand outward from the frame (100, 200), when the plug (130, 230) is moved from the proximal position to the distal position along a length of the implant (10, 20); a second endplate (150, 250) disposed opposing the first endplate (140, 240); wherein the first endplate (140, 240) and the second endplate (150, 250) extend from a proximal end of the implant (10, 20) to a distal end of the implant (10, 20) and cooperate to at least partially enclose the frame (100, 200); wherein the second endplate (150, 250) is pivotally engaged with the frame (100, 200) and configured to expand outward from the frame (100, 200), when the plug (130, 230) is moved from the proximal position to the distal position, characterized in that the first and second endplates (140, 150) are pivotably engaged with the frame via a hinge mechanism located near or on the proximal wall of the frame.