https://www.youtube.com/watch?v=ViaCSgQ6H-0
I gave this talk at POSICON 2019 in Mumbai as part of the instructional course on Adolescent Idiopathic Scoliosis. I discuss the Lenke classification and how it helps decide fusion levels. The video also includes the concept of last touched vertebra and how it helps decide the LIV (lowest instrumented vertebra).