That kid looks like he had a genioplasty done and nothing else...is that correct?
No he also had a bsso I think.
Heres what it says on the page that I found it"Figure 7. Patient presenting a hyperdivergent high-angle Class II malocclusion with a mild posterior vertical insufficiency, treated in the “classical” fashion. Clinical appearance (A, preoperative profile; and B, postoperative profile). Cephalometric x-rays, C, preoperative, and D, postoperative, for a patient treated by sagittal split osteotomy of the mandibular ramus without elongation of the ramus. We see a significant elongation of the mandibular body on the postoperative film, compared with ramus dimension"http://www.sciencedirect.com/science/article/pii/S0278239107015017