Fig. 4

anterior posterior projections at 9 weeks for all sample included in the study. Notice the evident difference in activation of the cis and trans-cortex among groups and bone segments. In bone segments implanted with VFLS the trans-cortex is thickened and shows radiological signs of activation both at the medullary and periosteal sides. The superimposition of abundant callus creates a slightly different aspect of the cortices and different cortices/forming callus grays intensity ratio with respect to the radiologic images we’re used to see using standard locking screw. The establishment of new standard assessment criteria might be necessary