Disclosed is intramedullary fixation assembly for bone fusion. A first member is positioned at a proximal end of the intramedullary fixation assembly and comprises first and second terminal ends, a first aperture at the first terminal end, a longitudinal axis extending through the first aperture and the second terminal end, and a bore extending through the first aperture and a second aperture in a side of the first member. The longitudinal axis and the bore define an angle. A second member is positioned at a distal end of the intramedullary fixation assembly. The second member comprises a second shaft extending along a second longitudinal axis, a bulbous portion at a first end of the second member, and a second threaded portion at a second end of the second member. The bulbous portion is configured to abut the first aperture of the first member when the second member is inserted through the second aperture and the bore and out the first aperture of the first member. The second member is configured for coupling with the first member at the angle.