A device for therapeutically aligning two misaligned bones on opposite sides of a joint, comprising: a first rigid extension securable to a first of the misaligned bones using a single approach selected from the group consisting of left lateral approach, right lateral approach, anterior approach, and posterior approach, a second rigid extension having a contacting surface positionable in contact with the second of the two misaligned bones from the approach selected for securing said first rigid extension, said second rigid extension is moveable with respect to said first rigid extension when said first rigid extension is secured to the first of the misaligned bones and said second rigid extension is positioned in contact with the second of the two misaligned bones; and a lever configured to lever the first rigid extension with respect to the second rigid extension to move said first rigid extension with respect to said second rigid extension, to thereby exert a pulling force on the first of the two misaligned bones, and a pushing force on the second of the two misaligned bones, aligning the first and second misaligned bones, the device further includes an intervertebral spacer , said first rigid extension securable to said intervertebral spacer, said intervertebral spacer connected to the first of the misaligned bones; said intervertebral spacer is formed in two segments , each segment attachable to one of the first or second misaligned bones, said segments moveable with respect to each other when attached to a respective misaligned bone and a fastener member secures the first rigid extension to the first of the misaligned bones and wherein the first rigid extension is configured to be secured to a surface of the first of the misaligned bones which is not between the first and second misaligned bones. a first rigid extension securable to a first of the misaligned bones using a single approach selected from the group consisting of left lateral approach, right lateral approach, anterior approach, and posterior approach, a second rigid extension having a contacting surface positionable in contact with the second of the two misaligned bones from the approach selected for securing said first rigid extension, said second rigid extension is moveable with respect to said first rigid extension when said first rigid extension is secured to the first of the misaligned bones and said second rigid extension is positioned in contact with the second of the two misaligned bones; and a lever configured to lever the first rigid extension with respect to the second rigid extension to move said first rigid extension with respect to said second rigid extension, to thereby exert a pulling force on the first of the two misaligned bones, and a pushing force on the second of the two misaligned bones, aligning the first and second misaligned bones, the device further includes an intervertebral spacer , said first rigid extension securable to said intervertebral spacer, said intervertebral spacer connected to the first of the misaligned bones; said intervertebral spacer is formed in two segments , each segment attachable to one of the first or second misaligned bones, said segments moveable with respect to each other when attached to a respective misaligned bone and a fastener member secures the first rigid extension to the first of the misaligned bones and wherein the first rigid extension is configured to be secured to a surface of the first of the misaligned bones which is not between the first and second misaligned bones. <EOS>