Analysis of biomechanical changes after removal of instrumentation in lumbar arthrodesis by finite element analysis. - Ho-Joong Kim; Heoung-Jae Chun; Seong-Hwan Moon; Kyoung-Tak Kang; Hak-Sun Kim; Jin-Oh Park; Eun-Su Moon; Joon-Seok Sohn; Hwan-Mo Lee (Medical Biol. Eng. Comput., 2010)