A spinal fixation device comprising: an outer housing defining an aperture and a longitudinal axis; and an end plate assembly coupled with the outer housing, at least a portion of the end plate assembly slidably received within the outer housing through said aperture of the outer housing,, the end plate assembly including a first end plate configured to engage a vertebral body, wherein the end plate assembly is selectively movable between a first position in which the first end plate is spaced apart from the outer housing and a second position in which the first end plate is adjacent the outer housing, and the first end plate is selectively adjustable to an angular orientation of a plurality of angular orientations with respect to the longitudinal axis of the outer housing, wherein the end plate assembly includes first and second elongate members (666, 668) operatively coupled to the first end plate such that axial movement of the first and second elongate members (666, 668) in tandem causes axial displacement of the first end plate, and relative movement between the first and second elongate members (666, 668) transitions the first end plate from a first angular orientation to a second angular orientation, and wherein the spinal fixation device further comprises a mounting assembly operatively supporting the first and second elongate members (666, 668) in the outer housing, characterized in that the mounting assembly includes a retaining housing and first and second rotatable members (610, 612) rotatably supported in the retaining housing, the first and second rotatable members (610, 612) operatively coupled with the first and second elongate members (666, 668) of the end plate assembly respectively. an outer housing defining an aperture and a longitudinal axis; and an end plate assembly coupled with the outer housing, at least a portion of the end plate assembly slidably received within the outer housing through said aperture of the outer housing,, the end plate assembly including a first end plate configured to engage a vertebral body, wherein the end plate assembly is selectively movable between a first position in which the first end plate is spaced apart from the outer housing and a second position in which the first end plate is adjacent the outer housing, and the first end plate is selectively adjustable to an angular orientation of a plurality of angular orientations with respect to the longitudinal axis of the outer housing, wherein the end plate assembly includes first and second elongate members (666, 668) operatively coupled to the first end plate such that axial movement of the first and second elongate members (666, 668) in tandem causes axial displacement of the first end plate, and relative movement between the first and second elongate members (666, 668) transitions the first end plate from a first angular orientation to a second angular orientation, and wherein the spinal fixation device further comprises a mounting assembly operatively supporting the first and second elongate members (666, 668) in the outer housing, characterized in that the mounting assembly includes a retaining housing and first and second rotatable members (610, 612) rotatably supported in the retaining housing, the first and second rotatable members (610, 612) operatively coupled with the first and second elongate members (666, 668) of the end plate assembly respectively.