Surgical strategy used in multilevel cervical disc replacement and cervical hybrid surgery: Four case reports

Figure 8 The surgical procedure of continuous two-level cervical disc replacement, which followed a bottom-up sequence in case 4. A-E: The upper tab of the prosthesis at C5/6 migrated forward during preparation of the disc space at C4/5. The degree of anterior migration of the artificial disc at C5/6 is denoted with dashed lines; F: We tapped the migrated tab back to the correct position.