Retrospective Study
Copyright ©The Author(s) 2021.
World J Clin Cases. Jun 6, 2021; 9(16): 3869-3879
Published online Jun 6, 2021. doi: 10.12998/wjcc.v9.i16.3869
Figure 1
Figure 1 Clinical outcomes during the 5-year follow-up. A: Neck and arm visual analogue scale scores; B: Neck disability index scores; C: Japanese Orthopaedic Association scores. VAS: Visual analogue scale; NDI: Neck disability index; JOA: Japanese Orthopaedic Association.
Figure 2
Figure 2 A 50-year-old woman suffering from C5-6 degenerative disc disease. A: Pre-operative magnetic resonance imaging demonstrated C5-6 disc herniation; B: At the 5-year follow-up, the neutral lateral radiograph showed a normal position of dynamic cervical implant; C and D: Dynamic radiographs showing that the functional spinal unit range of motion maintained; E and F: The lateral bending at the operated level was limited.
Figure 3
Figure 3 A 45-year-old woman receiving dynamic cervical implant arthroplasty due to C5-6 disc herniation. A: Preoperative computed tomography showed that there were osteophytes at the posterior rims of the C5-6 intervertebral space (orange arrow); B: At 1-mo after operation, the osteophytes were excised thoroughly (orange arrow); C: At the 12-mo follow-up, grade II heterotopic ossification formation was observed at the operated segment (orange arrow); D: At the 60-mo follow-up, heterotopic ossification developed further to grade III (orange arrow).