A compression device for use in a spinal surgery, comprising: - a first sleeve having a proximal end and a distal end, wherein the distal end of the first sleeve is arranged for placement over at least a portion of one or more pedicle screw tulips ; - a second sleeve having a proximal end and a distal end, wherein the distal end of the second sleeve is arranged for placement over at least a portion of one or more additional pedicle screw tulips ; and - a linear drive , wherein the linear drive is operable to cause movement of the first sleeve and/or the second sleeve for compression and/or distraction, - wherein the linear drive comprises a sheath and a threaded rod at least partially disposed through the sheath and - wherein the compression device further comprises a first base attached to the proximal end of the first sleeve , wherein the sheath is disposed through the first base ; - wherein the compression device further comprises a pair of angulating arms coupled to a fulcrum at first end of the angulating arms and to the linear drive at the second end of the angulating arms , wherein first end of the angulating arms are rotatable about the fulcrum; - wherein the second end of one of the angulating arms is coupled to the proximal end of the first sleeve and the second end of another one of the angulating arms is coupled to the proximal end of the second sleeve characterized in that ; - the compression device further comprises spline engagement mechanisms coupling each of the angulating arms to the respective one of the first sleeves and the second sleeves , wherein the spline engagement mechanisms each comprise a first attachment piece having a threaded end disposed in a base at the second end of the respective one of the angulating arms and a second attachment piece coupled to the first attachment piece and secured to the proximal end of respective one the first sleeve or the second sleeve with an engagement button . - a first sleeve having a proximal end and a distal end, wherein the distal end of the first sleeve is arranged for placement over at least a portion of one or more pedicle screw tulips ; - a second sleeve having a proximal end and a distal end, wherein the distal end of the second sleeve is arranged for placement over at least a portion of one or more additional pedicle screw tulips ; and - a linear drive , wherein the linear drive is operable to cause movement of the first sleeve and/or the second sleeve for compression and/or distraction, - wherein the linear drive comprises a sheath and a threaded rod at least partially disposed through the sheath and - wherein the compression device further comprises a first base attached to the proximal end of the first sleeve , wherein the sheath is disposed through the first base ; - wherein the compression device further comprises a pair of angulating arms coupled to a fulcrum at first end of the angulating arms and to the linear drive at the second end of the angulating arms , wherein first end of the angulating arms are rotatable about the fulcrum; - wherein the second end of one of the angulating arms is coupled to the proximal end of the first sleeve and the second end of another one of the angulating arms is coupled to the proximal end of the second sleeve characterized in that ; - the compression device further comprises spline engagement mechanisms coupling each of the angulating arms to the respective one of the first sleeves and the second sleeves , wherein the spline engagement mechanisms each comprise a first attachment piece having a threaded end disposed in a base at the second end of the respective one of the angulating arms and a second attachment piece coupled to the first attachment piece and secured to the proximal end of respective one the first sleeve or the second sleeve with an engagement button . <EOS>