The Importance of Sternal Approximation and Mechanical Stability in Bone Healing

is rare to have an environment where the gap is completely reduced, another type of primary repair is gap repair. In this environment, a slight gap may be visible, but not enough for cartilage or woven bone formation; therefore repair is initiated by marrow cells of the bone and lamellar bone is laid down. However, the new bone is laid down perpendicular to the old bone, and therefore must be remodeled to match the old bone.2, 12 Introduction