SPINE An International Journal for the study of the spine Publish Ahead of Print DOI: 10.1097/BRS.0000000000002316 Prosthesis and Hybrid Strategy Consideration for Treating 2-level Cervical Disc Degeneration in Hybrid Surgery Yang Li, PhD 1 , Guy R. Fogel, MD 2 , Zhenhua Liao, PHD 3 , Rajnesh Tyagi, PhD 4 , Weiqiang Liu, PhD 5 1 State Key Laboratory of Tribology, Tsinghua University, Beijing, China and Department of Mechanical Engineering, Tsinghua University, Beijing, China 2 Spine pain begone Clinic, San Antonio, TX, United States 3 Biomechanics and Biotechnology Lab, Research Institute of Tsinghua University in Shenzhen, Shenzhen, Guangdong, P.R. China 4 Department of Mechanical Engineering, Indian Institute of Technology (BHU) Varanasi,Varanasi (UP) INDIA 5 State Key Laboratory of Tribology, Tsinghua University, Beijing, China and Biomechanics and Biotechnology Lab, Research Institute of Tsinghua University in Shenzhen, Shenzhen, P.R. China Corresponding Author: Weiqiang Liu Tsinghua University, Hai Dian District, Beijing Email: weiqliu.tsinghua@foxmail.com The device(s)/drug(s) is/are FDA-approved or approved by corresponding national agency for this indication. The Basic Research Project of Shenzhen (JCYJ20170307150043479) funds were received in support of this work. No relevant financial activities outside the submitted work. Copyright © 2017 Wolters Kluwer Health, Inc. Unauthorized reproduction of this article is prohibited.