Illustration demonstrating how little implant application and compression provides to total correction of this 65 degree curve. Above illustration: discectomies completed staples and screws in place, but no rods. Apposition is almost final, but slight compression must occur at two of the four discs within the construct. Two of the four discs are lying in “bone-on-bone” apposition, following the “total discectomy” at each interspace. Two need slight additional discectomy, before applying the rods and achieving final “bone-on-bone” apposition at all 4 interspaces.