Selective Thoracic Fusion in Lenke 1C Curves: Prevalence and Criteria Crawford, Charles H. III; Lenke, Lawrence G.; Sucato, Daniel J.; More Crawford, Charles H. III; Lenke, Lawrence G.; Sucato, Daniel J.; Richards, B. Stephens III; Emans, John B.; Vitale, Michael G.; Erickson, Mark A.; Sanders, James O. Less Spine. 38(16):1380-1385, July 15th, 2013. Abstract Abstract In Brief In Brief Favorites PDF Get Content & Permissions Abstract: In Brief: Factors not included in the Lenke classification system are being used to select fusion levels (selective thoracic vs. fusion of both curves) for type 1C curves. Patients who underwent a selective thoracic fusion had a smaller thoracolumbar/lumbar (TL/L) Cobb angle, larger main thoracic: TL/L ratios, and less desire to change their appearance.