■ Selective Thoracic Fusion for Adolescent Idiopathic Scoliosis with Lenke 1C Curve: Radiographic and Clinical Outcomes with Long-term Follow-up 39
Se-Jun Park, Chong-Suh Lee, Jin-Sung Park, Chang-Hyun Ma, Tae Soo Shin, Chung-Youb Jeon

■ Can we Consider Older Patients as Same as Younger Patients Regard to the Proximal Junction Failure with Radiographic Risk Factors in Adult Spinal Deformity 50
Keun-Ho Lee, Jin-Sung Park, Chong-Suh Lee

■ Clinical Outcomes of Biportal Endoscope Lumbar Discectomy In Obese Patients: Preliminary Reports 60
Hyun-Jin Park, Jun-Young Choi, Ki-Han You, Sang-Min Park, Min-Seok Kang, Woo-Myung Lee

■ Does Interbody Cage Subsidence Affect Clinical and Radiological Results of Minimally Invasive Lateral Lumbar Interbody Fusion? 70
Jae Chul Lee, Jae Wan Soh, Joonghyun Ahn