MIGRATION OF BANANA-SHAPED CAGE IN THE TWO LEVELS AFTER POSTERIOR LUMBAR INTERBODY FUSION: A CASE REPORT Journal title: Journal of Turkish Spinal Surgery Authors: Bashar ABUZAYED, Seckin AYDIN, Sabri AYDIN, Ahmet Levent AYDIN, Galip Zihni SANUS, Ziya AKAR Subject(s): Medicine, Surgery